a. How many chromosomes are there in the somatic cells of an animal in which 2 n = 14? ______How many chromosomes are in its gametes? _ b. If n = 14, how many chromosomes are there in diploid somatic cells? _ How many sets of homologous chromosomes are in the gametes? c. If 2 n = 28, how many chromatids are there in a cell after chromosome duplication has occurred prior to cell division? _________ What is the difference between sister chromatids and nonsister chromatids?

Question

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Answer 1

Textbook Question

Chapter 13, Problem 1IQ

a. How many chromosomes are there in the somatic cells of an animal in which 2n = 14? __________How many chromosomes are in its gametes? _________
b. If n = 14, how many chromosomes are there in diploid somatic cells? _______ How many sets of homologous chromosomes are in the gametes?
c. If 2n = 28, how many chromatids are there in a cell after chromosome duplication has occurred prior to cell division? ___________ What is the difference between sister chromatids and nonsister chromatids?

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

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Students have asked these similar questions

What is the fundamental difference between mitosis and meiosis? A. DNA is replicated twice in meiosis, but only once in mitosis. B. The number of DNA molecules per cell nucleus is cut in half in meiosis but remains constant in mitosis. C. The number of chromosomes doubles in meiosis, whereas it stays the same in mitosis. D. Mitosis involves two cell divisions, whereas meiosis only involves one.

The diagram below shows a cell during Meiosis II: a) What phase of Meiosis II is the cell in? How do you know? b) Assuming all of the chromosomes present during Meiosis II are shown in the figure above, how many chromosomes (counting homologous pairs as two chromosomes) does a gamete from this organism have? c) Draw the same cell during the same phase of Meiosis I. Label the elements

In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. (a) Draw four rounds of mitosis for a stem cell, and label the daughter cells. (b) For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. (c) Explain what would happen if stem cells divided like spermatogonia.

Answer 2

Textbook Question

Chapter 13, Problem 1IQ

a. How many chromosomes are there in the somatic cells of an animal in which 2n = 14? __________How many chromosomes are in its gametes? _________
b. If n = 14, how many chromosomes are there in diploid somatic cells? _______ How many sets of homologous chromosomes are in the gametes?
c. If 2n = 28, how many chromatids are there in a cell after chromosome duplication has occurred prior to cell division? ___________ What is the difference between sister chromatids and nonsister chromatids?

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

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Answer 3

Textbook Question

Chapter 13, Problem 1IQ

a. How many chromosomes are there in the somatic cells of an animal in which 2n = 14? __________How many chromosomes are in its gametes? _________
b. If n = 14, how many chromosomes are there in diploid somatic cells? _______ How many sets of homologous chromosomes are in the gametes?
c. If 2n = 28, how many chromatids are there in a cell after chromosome duplication has occurred prior to cell division? ___________ What is the difference between sister chromatids and nonsister chromatids?

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

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Answer 4

Textbook Question

Chapter 13, Problem 1IQ

a. How many chromosomes are there in the somatic cells of an animal in which 2n = 14? __________How many chromosomes are in its gametes? _________
b. If n = 14, how many chromosomes are there in diploid somatic cells? _______ How many sets of homologous chromosomes are in the gametes?
c. If 2n = 28, how many chromatids are there in a cell after chromosome duplication has occurred prior to cell division? ___________ What is the difference between sister chromatids and nonsister chromatids?

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

Answer 8

a.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Answer 9

a.

Expert Solution

Answer 10

a.

Expert Solution

Answer 11

Expert Solution

Answer 12

Summary Introduction

To determine: The number of chromosomes present in a somatic cell of an animal in which 2n=14.

Introduction: Chromosomes are long thread like structures present in all cells of the body. These chromosomes contain coded genetic materials in the form of genes and that are transmitted to the succeeding generations by the process of cell division. A diploid cell contains two set of chromosomes, whereas a single set of chromosome is present in haploid cells.

Answer 13

Answer to Problem 1IQ

The number of chromosomes present in the given somatic animal cell is 14.

Answer 14

Explanation of Solution

Somatic cells include all the body cells except the gametes (sperms and ova). Under normal conditions, all the somatic cells exist in a diploid form. It is given that the animals have (2n=14) and (2n) represents the diploid condition of the cell. It is given that the cell is somatic and hence, it is also diploid. Thus, the number of chromosomes present in the given somatic animal cell is 14.

Answer 15

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

Answer 16

Expert Solution

Answer 17

Expert Solution

Answer 18

Expert Solution

Answer 19

Summary Introduction

To determine: The number of chromosomes present in the gamete cells of an animal is 2n=14.

Answer 20

Answer to Problem 1IQ

The number of chromosomes present in the cell’s gamete is 7.

Answer 21

Explanation of Solution

Gametes are the reproductive cells and include the sperms and ova. Under normal conditions, all the gametes exist in a haploid condition. It is given that 2n=14 where (2n) indicates diploid condition of the cell. Therefore, the gametes that are haploid have 7 chromosomes in its cell.

Answer 22

b.

Expert Solution

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Answer 23

b.

Expert Solution

Answer 24

b.

Expert Solution

Answer 25

Expert Solution

Answer 26

Summary Introduction

To determine: The number of chromosomes present in a diploid somatic cell is n=14.

Introduction: Somatic cells include all the body cells except the gametes. Gametes include the reproductive cells, which are the sperms and ova.

Answer 27

Answer to Problem 1IQ

The number of chromosomes present in a diploid somatic cell, when n=14 is 28.

Answer 28

Explanation of Solution

It is given that n=14 and (n) indicates the haploid condition and when the cells are diploid, the number of chromosomes is 28 (since n=14, 2n=28). Therefore, the diploid somatic cell has 28 chromosomes.

Answer 29

Expert Solution

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

Answer 30

Expert Solution

Answer 31

Expert Solution

Answer 32

Expert Solution

Answer 33

Summary Introduction

To determine: The number of set of the homologous chromosomes present in the gametes.

Answer 34

Answer to Problem 1IQ

The set of homologous chromosomes present in the gamete is 1.

Answer 35

Explanation of Solution

Homologous chromosomes are the pair of chromosomes containing one maternal and one paternal chromosome. Homologous chromosomes are paired chromosomes that are identical in length, centromere location, and the gene loci but the sequence of the gene varies. The gametes are haploid and hence, they possess only a single set of chromosomes that they contribute it during the fertilization. Therefore, the set of homologous chromosomes present in the gamete is 1.

Answer 36

c.

Expert Solution

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Answer 37

c.

Expert Solution

Answer 38

c.

Expert Solution

Answer 39

Expert Solution

Answer 40

Summary Introduction

To determine: The number of chromatids present after the occurrence of duplication of the chromosome prior to the cell division in a cell containing 2n=28.

Introduction: Chromosomes are long thread like structures present in the cell. Each chromosome constitutes two chromosomal arms that are linked together by the centromere. The coded information in the form of genes is arranged in the chromatids.

Answer 41

Answer to Problem 1IQ

The number of chromatids present in the cell after the duplication of chromosome had occurred prior to cell division, when 2n=28 is 56.

Answer 42

Explanation of Solution

If the chromosomes undergo duplication before the onset of cell division, the number of chromosomes in the cell doubles. Since each chromosome has two chromatids, the number of chromatids when 28 chromosomes are present in the cell 56.

Answer 43

Expert Solution

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.

Answer 44

Expert Solution

Answer 45

Expert Solution

Answer 46

Expert Solution

Answer 47

Summary Introduction

To differentiate: Sister chromatids from non-sister chromatids.

Answer 48

Explanation of Solution

Criteria	Sister chromatids	Non-sister chromatids
Formation	Sister chromatids are formed when the chromosome undergoes duplication during the S phase of interphase.	Non-sister chromatids occur on different chromosomes of the homologous chromosomes.
Centromere	They are joined by the centromere at the center and all along their length by cohesive proteins.	Since they are present in different chromosomes, they are not linked by the centromere.