Campbell Biology Plus Masteringbiology
10th Edition
ISBN: 9780321775849
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 46, Problem 7TYU
Summary Introduction
To examine: The similar events occurring in human males and females.
Introduction: Meiosis is a type of cell division that occurs in reproductive cells. This results in formation of four daughter cells. The meiotic process is called reductional division because it generates haploid cells that have half the chromosome number to that of parent cell. In this process, four daughter cells are produced, but only one form egg cell and the other three daughter cells degenerate. Sperm production also occurs by meiosis, but unlike in females four daughter spermatids are formed. Meiosis in male reproductive cell is complete once started, but in female reproductive cells meiosis gets interrupted.
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Students have asked these similar questions
For which of the following is the number the same in humanmales and females?(A) interruptions in meiotic divisions(B) functional gametes produced by meiosis(C) meiotic divisions required to produce each gamete(D) different cell types produced by meiosis
Which of the following does not occur in meiosis?
(a)
(b)
(c)
Homologous pairs form tetrads.
Haploid nuclei are formed.
Crossing over occurs.
(d)
Four ova are formed.
A diploid cell contains three pairs of homologous
chromosomes designated C1 and· C2, M1 and M2,
and S1 and S2; no ·crossing over occurs. What
possible combinations of chromosomes will be present
in
(a) daughter cells following mitosis
(b) the first meiotic metaphase
(c) haploid cells following both divisions of meiosis?
For your answer give the number, show your work and
clearly designate if the response is for part(a), (b), or
(c)
Chapter 46 Solutions
Campbell Biology Plus Masteringbiology
Ch. 46.1 - Compare and contrast the outcomes of asexual and...Ch. 46.1 - Parthenogenesis is the most common form of asexual...Ch. 46.1 - WHAT IF? If a hermaphrodite self-fertilizes, will...Ch. 46.1 - Prob. 4CCCh. 46.2 - How does internal fertilization facilitate life on...Ch. 46.2 - What mechanisms have evolved in animals with (a)...Ch. 46.2 - Prob. 3CCCh. 46.3 - Why might frequent use of a hot tub make it harder...Ch. 46.3 - Prob. 2CCCh. 46.3 - WHAT IF? If each vas deferens in a male was...
Ch. 46.4 - How are the functions of FSH and LH in females and...Ch. 46.4 - How does an estrous cycle differ from a menstrual...Ch. 46.4 - WHAT IF? If a human female begins taking...Ch. 46.4 - Prob. 4CCCh. 46.5 - Prob. 1CCCh. 46.5 - In what ways are tubal ligation and vasectomy...Ch. 46.5 - Prob. 3CCCh. 46 - Would a pair of haploid offspring produced by...Ch. 46 - Identify which of the following, if any, are...Ch. 46 - How does the difference in size and cellular...Ch. 46 - Prob. 46.4CRCh. 46 - Prob. 46.5CRCh. 46 - Prob. 1TYUCh. 46 - In male mammals, excretory and reproductive...Ch. 46 - Prob. 3TYUCh. 46 - Prob. 4TYUCh. 46 - Prob. 5TYUCh. 46 - Prob. 6TYUCh. 46 - Prob. 7TYUCh. 46 - Prob. 8TYUCh. 46 - DRAW IT In human spermatogenesis, mitosis of a...Ch. 46 - Prob. 10TYUCh. 46 - SCIENTIFIC INQUIRY You discover a new egg-laying...Ch. 46 - WRITE ABOUT A THEME: ENERGY AND MATTER In a short...Ch. 46 - SYNTHESIZE YOUR KNOWLEDGE A female Komodo dragon...
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- If an non disjunction occurs in meiosis 2 in a male and the resulting sperm fertilizes a normal female egg, which of the following coujld result. Check ALL that apply a) YO b) XYY c) XXY d) XXX e) XO Polar bodies are formed during Male meiosis Female meiosis Both male and female meiosis Neither male nor female meiosis A brain cell in a normal human male would have a Y chromosome. a) True b) Falsearrow_forwardDuring oogenesis, meiosis results in:A) four equally sized cells that stop dividing in meiosis 1B) 2 equally sized cells, but only one that is typically fertilizedC) 2 equally sized cells that are both typically fertilizedD) 2 or 3 small cells and one large cell that develops further if fertilizedarrow_forwardDraw a schematic diagram showing spermatogenesis vis-à-vis oogenesis. Label the stage of development and chromosome number of daughter cells at the following levels of maturation: (a) mitotic proliferation (b) meiosis I and II (c) maturation. Table 2: Spermatogenesis vis-à-vis Oogenesis Spermatogenesis Oogenesisarrow_forward
- imagine a giraffe whose diploid is 30. A)Under what circumstances would the giraffe go through a process of meiosis? . b) what will be the final result of this meiosis for the giraffe (# of cells + # of chromosomes/cells)arrow_forwardSelect the best answer or answers from the choices given: Relative to differences between mitosis and meiosis, choose the statements that apply only to events of meiosis. (a) tetrads present, (b) produces two daughter cells, (c) produces four daughter cells, (d) occurs throughout life, (e) reduces thechromosomal number by half, (f) synapsis and crossover of homologues occur.arrow_forwardHuman fertilization involves the fusion of two haploid gametes, producing a zygote containing (a) 23 chromosomes. (b) 46 chromosomes. (c) the normal haploid number of chromosomes. (d) 46 pairs of chromosomes.arrow_forward
- A diploid cell has 4C genetic material and 16 chromosomes at the start of cell division. Identify the: (1) no. of chromosome per cell at S phase (2) no. of pairs of homologous chromosomes per cell at Metaphase 1 (3) no. of chromosomes per cell at Anaphase 1 (4) amount of genetic material per cell after Meiosis 2 (5) amount of genetic material per cell after Meiosis 1arrow_forwardIn a cell that has just begun the process of meiosis, as shown, what is the probability that a resulting gamete will have only maternally inherited chromosomes? (blue chromosomes are paternally inherited, red are maternally inherited) a) 1/4 b) 1/2 c) 1/8 d) 1/16 e) 1/32arrow_forwardWhich statement does not accurately describe what occurs during the process of meiosis? A) All stages of meiosis follow DNA replication. B) Meiosis produces gametes with the haploid chromosome number. C) Meiosis produces four identical gametes, either egg or sperm. D) Genetic variation among sexually reproducing organisms is enhanced by meiosis. Not Gradedarrow_forward
- If nondisjunction occurs in humans for one pair of homologous chromosomes during meiosis I. The other pairs segregate normally. a) Will any normal gametes result? b) How many chromosomes will each human gametehave? If nondisjunction occurs in humans for sister chromatids during meiosis II. The other pairs segregate normally. a) Will any normal gametes result? b) How many chromosomes will each human gamete have?arrow_forwardA diploid organism produces four gametes from one parent cell through the process of meiosis. Two gametes are found to have 7 chromosomes and two gametes are found to have 5 chromosomes. A) Is this the expected number of chromosomes that would be found in each gamete following a normal cycle of meiosis? If yes, explain why. If no, explain why not and describe how the gamete situation described above occurred. B) Determine the number of homologous chromosome pairs that the original parent cell contained, before meiosis began. Explain how you determined this value.arrow_forwardWhich statement is true of meiosis? 1)two identical cells in both divisions 2)the first division produces haploid cells and the second produces diploid cells 3)the first division produces diploid cells and the second produces haploid cells 4) the products of both meiotic divisions are haploidarrow_forward
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