WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
5th Edition
ISBN: 9781319516116
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 8, Problem 9MC
Summary Introduction
Introduction:
A chromosome is a long DNA molecule that contains all the genetic material of an organism. It includes the packaging proteins called histones. It contains genetic material used to inherit information from one generation to another.
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Which of the following is true for
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One copy of the allele will cause the
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An individual who shows the
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Two copies of the allele are required
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D
These alleles are seen more
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In humans, each cell normally contains a diploid (2n) chromosome number of 46. Say
that a human body cell and sex cell will undergo mitosis and meiosis respectively, provide
the number of chromosomes in each cell for every stage.
Stage of Mitosis
Number of
Stages of Meiosis
Number of
Chromosomes in
Chromosomes in
One Cell
One Cell
Prophase
2n =
Prophase 1
2n =
Prometaphase
2n =
Prometaphase 1
2n =
Metaphase
2n =
Metaphase 1
2n =
Anaphase
2n =
Anaphase 1
2n =
Telophase and
Cytokinesis
Telophase 1 and
Cytokinesis
2n =
n =
Prophase 2
Prometaphase 2
n =
Metaphase 2
n =
Anaphase 2
= u
Telophase 2 and
Cytokinesis
n =
Human somatic cells have 46 chromosomes. How many chromosomes are present in human cells undergoing each of the following phases of meiosis?
Interphase - Answer: 0 2 3 4 6 9 2
Prophase I - Answer: 0 2 3 4 6 9 2
Prophase II - Answer: 0 2 3 4 6 9 2
Telophase I - Answer: 0 2 3 4 6 9 2
Telophase II - Answer: 0 2 3 4 6 9 2
Chapter 8 Solutions
WHAT IS LIFE? ACHIEVE 1 TERM ACCESS CODE
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- The organism you are working with has the following chromosomes. Place the chromosomes of this organism onto the cell below such that the diagram accurately shows a primary meiocyte from this organism in metaphase I of meiosis. Note 1: Only place chromosomes you need. You don't need them all. Note 2: You can place the "Blank Box' image if you don't think you need a chromosome at a particular position. Dashed line - the metaphase plate 1.arrow_forwardThe organism you are working with has the following chromosomes. Place the chromosomes of this organism onto the cell below such that the diagram accurately shows a primary meiocyte from this organism in metaphase I of meiosis. Note 1: Only place chromosomes you need. You don't need them all. Note 2: You can place the 'Blank Box' image if you don't think you need a chromosome at a particular position. Dashed linethe metaphase platearrow_forwardFigure 18.14 Which is most likely to survive, offspring with 2n+l chromosomes or offspring with 2n-l chromosomes?arrow_forward
- A diploid fruitfly has 8 chromosomes. How many chromosomes are present in an individual with trisomy in Chromosome 1 and Chromosome 2? A person is born with two X chromosomes, trisomy 21 and two copies of other chromosomes. How many chromosomes are present in this individual? * A couple is planning to have three children. What is the probability of having all boys? *arrow_forwardFigure 1. Showing a homologous pair of chromosomes that carry two linked genes. Here we can see that one chromosome carries A and Balleles, while the other homologous chromosome carries a and b alleles. This is much more informative than just giving the genotype of AaBb. Another way to symbolize the arrangement of alleles on a chromosome is to give the symbols for alleles on one chromosome above a horizontal line, and the symbols for the alleles on the homologous chromosome below the horizontal line. For example: A Figure 2. Showing the arrangement of alleles for a pair of linked genes. Here we can see that, exactly like the example in Figure 1, one chromosome carries A and B alleles, while the other chromosome carries a and b alleles. 1. Suppose that Gene G and Gene D are linked. If the genotype of an organism is GGDD, use both types of symbols you learned in Figure 1 and Figure 2 above to show the arrangement of alleles for this organism.arrow_forwardIn dolphins, 2n=44. Drag each term or phrase to the correct position. (Each box is used once.) Somatic cell in anaphase of mitosis Ovum Somatic cell during interphase Zygote Sperm Cells with 22 chromosomes Cells with 44 chromosomes Cells with 88 chromosomesarrow_forward
- In meiosis,4 cells are produced and each cell are unique daughter cell.However isn‘t it true that AB(pink)and ab(blue)are identical to parental chromosome??so how many of these cells are genetically identical?I am confused.arrow_forwardYour class has been studying cell division in a number of organisms with different chromosome numbers. Unfortunately, the slides showing the different stages of mitosis and meiosis got mixed up, and some of them got lost. The figures below show the 12 slides that you have managed to find. The organism that you have been studying has a 2n number of 8 with one pair of large metacentric chromosomes, one pair of small metacentric chromosomes, one pair of acrocentric chromosomes and one pair of telocentric chromosomes. a. Do any of the recovered slides below show the stages of cell division indicated in the table in the answer sheet? If so, please write only the slide number in the correct place in the table on your answer sheet.arrow_forwardThe white spots in this image represent Barr Bodies. The cells are from a Male cell line. What is the sex chromosome complement of this cell line?arrow_forward
- What chromosomes belong to a normal human female? 44 autosomes and 2 X chromosomes 22 autosomes and 2 X chromosomes 44 autosomes, one X chromosome, and one Y chromosome 46 autosomes and two X chromosomesarrow_forwardIf humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would expect to find in the following . Sperm • Egg . . Daughter cell from mitosis Daughter cell at end of moiosis =arrow_forwardIn some insects the female have two x chromosomes, while the males have One x chromosomes and no y chromosome .if the normal deploid number in an insect of this type is 14 what would be the number of chromosomes in the body cells of males and of females?arrow_forward
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