Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
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
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) Do you see any differences between the onion and whitefish blastula cells in anaphase?
(b) These cells are both undergoing mitosis. How would these cells be different if you were looking at a slide of anaphase I of meiosis instead?
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) False
Chapter 46 Solutions
Campbell Biology (11th Edition)
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 - MAKE CONNECTIONS What are the shared and distinct...Ch. 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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- During 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_forwardimagine 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_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
- Select 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_forwardA 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_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
- Which 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_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_forwardA sperm cell from the fruit fly Drosophila melanogaster contains four chromosomes. How many chromosomes would be present in a spermatogonial cell about to enter meiosis? How many chromatids would be present in a spermatogo- nial cell at metaphase I of meiosis? How many would be present at metaphase II?arrow_forward
- Which of the following cells are haploid? (a) (b) spermatogonium ova (c) (d) oogonium somatic cellarrow_forwardDescribe how meiosis provides for genetic variability.If an animal had a haploid number of two (no sex chromosomes), how many genetically different gametes could it produce? (Assume no crossing over.) What if it had a haploid number of five?arrow_forwardWhat is happening during this phase of meiosis? A.)Mitosis is complete and 4 diploid daughter cells have been produced. B.)Telophase II C.)Meiosis II is complete and 4 haploid daughter cells have been produced. D.)Meiosis I is complete and 4 diploid daughter cells have been produced E.)Meiosis II is complete and 4 diploid daughter cells have been producedarrow_forward
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