Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 9, Problem 12RQ
Describe 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.) If it had a haploid number of five? LO12
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Chapter 9 Solutions
Biology: Life on Earth
Ch. 9 - Fill-in-the-Blank The genetic material of all...Ch. 9 - Fill-in-the-Blank Genetically identical offspring...Ch. 9 -
2. Prokaryotic cells divide by a process called...Ch. 9 - Growth and development of eukaryotic organisms...Ch. 9 - Fill-in-the-Blank Most plants and animals have...Ch. 9 - The four phases of mitosis are _______, _______,...Ch. 9 - Prob. 7FTBCh. 9 - Prob. 8FTBCh. 9 - Fill-in-the-Blank During__________ of meiosis I,...Ch. 9 - Fill-in-the-Blank Three processes that promote...
Ch. 9 - Prob. 1RQCh. 9 - Prob. 2RQCh. 9 -
2. Define mitosis and cytokinesis. What changes...Ch. 9 - Diagram the stages of mitosis. How does mitosis...Ch. 9 - Define the following terms: homologous chromosome...Ch. 9 -
5. Describe and compare the process of...Ch. 9 - How is the cell cycle controlled? Why is it...Ch. 9 - Diagram the events of meiosis. At which stage do...Ch. 9 - Prob. 9RQCh. 9 - In what ways are mitosis and meiosis similar? In...Ch. 9 - Describe or diagram the three main types of...Ch. 9 - Describe how meiosis provides for genetic...Ch. 9 - Most nerve cells in the adult human central...Ch. 9 - Cancer cells divide out of control. Side effects...Ch. 9 - Some animal species can reproduce either asexually...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Human females have two X chromosomes (XX); males have one X and one Y chromosome (XY). a. With respect to X-linked alleles, how many different types of gametes can a male produce? b. If a female is homozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele? c. If a female is heterozygous for an X-linked allele, how many types of gametes can she produce with respect to that allele?arrow_forwardWhat type of gametes can be produced by simple non-disjunction of the sex chromosomes in a human male? Simple non-disjunction means that non-disjunction occurs in meiosis I or meiosis II, but not in both meiosis I and meiosis II. Choose all answers that are correct Group of answer choices 22, 0 24, YY 25, XXY 23, XX 23, XY 25, XXX 24, XY 24, XXarrow_forwardFill in the cells below showing the NORMAL process of meiosis of the male's sex chromosomes (XY – the X and Y are representing the entire chromosome, and remember X and Y act like a homologous pair). DO NOT show crossing over. prior to meiosis 44 +XY What are the possible normal gametes produce after meiosis division? Identify the possible sex of the offspring if these normal sperm cells are fertilized by the egg cell.arrow_forward
- If a diploid cell entering meiosis has 12 chromosome pairs, what is the number of possible chromosomes at the end of meiosis?arrow_forwardPlease helparrow_forwardA cell has four pairs of chromosomes. Assuming that crossing over does not occur, what is the probability that a gamete will contain all of the paternal chromosomes? If n equals the number of chromosomes in a set, which of the following expressions can be used to calculate the probability that a gamete will receive all of the paternal chromosomes: (1/2)n, (1/2)n–1, or n1/2?arrow_forward
- Distinguish between the following terms: somatic cell and gamete; autosome and sex chromosomes; haploid and diploid. Describe the events that characterize each phase of meiosis. Describe three events that occur during meiosis I but not mitosis. Name and explain the three events that contribute to genetic variation in sexually reproducing organisms.arrow_forwardIf nondisjunction of the sex chromosomes takes place in meiosis I in the male in Figure , what sexual phenotypes and proportions of offspring will be produced?arrow_forwardWhat is the purpose of meiosis? (You may select more than one answer if you think multiple options are correct.) O To generate haploid gametes O To generate 2 identical cells To generate 4 identical cells O To generate diploid gametesarrow_forward
- Non disjunction occurs when chromosomes fail to separate during meiosis, resulting in an abnormal number of chromosomes in the gametes. Assume an animal species has a diploid number of 4. Describe and/or show what the normal gametes would be like, and what would result from non disjunction in meiosis one, and what would result from non disjunction in meiosis two. You may use a drawing as part of your answer, but a drawing alone is not sufficient.arrow_forwardDoes this diagram represent normal Meiosis? Why or why not? XX X) (X 0000arrow_forwardIf a human gamete with an extra chromosome participates in fertilization with a gamete with a normal number of chromosomes, how many chromosomes will the zygote have? Explain your answer. (Remember, zygotes are diploid)arrow_forward
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