Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 3.2, Problem 3COMQ
What critical event occurs during the S phase of the eukaryotic cell cycle?
a. Cells make a decision of whether or not to divide.
b.
c. The chromosomes condense.
d. The single nucleus is divided into two nuclei.
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What is a critical event that occurs during S phase of the cell cycle?a. Cells decide whether or not to divide.b. DNA replication produces pairs of sister chromatids.c. The chromosomes condense.d. The single nucleus is divided into two nuclei.
Which statement about eukaryotic chromosomes entering mitosis is NOT true?a. They enter as two chromatids.b. They enter with a single centromere.c. They are soon visible under the light microscope.d. Their DNA is not yet replicated.
During which phase of the cell cycle is the genetic material duplicated?
a.
Metaphase
b.
Anaphase
c.
Telophase
d.
Interphase
e.
Prophase
Chapter 3 Solutions
Genetics: Analysis and Principles
Ch. 3.1 - 1. Which of the following is not found in a...Ch. 3.1 - When preparing a karyotype, which of the following...Ch. 3.1 - How many sets of chromosomes are found in a human...Ch. 3.2 - Binary fission a. is a form of asexual...Ch. 3.2 - Prob. 2COMQCh. 3.2 - What critical event occurs during the S phase of...Ch. 3.3 - 1. What is the function of the kinetochore during...Ch. 3.3 - Prob. 2COMQCh. 3.4 - Prob. 1COMQCh. 3.4 - Which phase of meiosis is depicted in the drawing...
Ch. 3.5 - In animals, a key difference between...Ch. 3.5 - Which of the following statements regarding plants...Ch. 3.6 - Which of the following is not one of the tenets of...Ch. 3.6 - A pea plant has the genotype TtRr. The independent...Ch. 3.6 - In mammals, sex is determined by a. the SRY gene...Ch. 3.6 - An abnormal fruit fly has two sets of autosomes...Ch. 3 - The process of binary fission begins with a single...Ch. 3 - 2. What is a homolog? With regard to genes and...Ch. 3 - What is a sister chromatid? Are sister chromatids...Ch. 3 - With regard to sister chromatids, which phase of...Ch. 3 - A species is diploid and has three chromosomes per...Ch. 3 - How does the attachment of kinetochore...Ch. 3 - 7. For the following events, specify whether they...Ch. 3 - Prob. 8CONQCh. 3 - A cell is diploid and contains three chromosomes...Ch. 3 - Prob. 10CONQCh. 3 - A eukaryotic cell is diploid and contains 10...Ch. 3 - Prob. 12CONQCh. 3 - 13. A cell has four pairs of chromosomes. Assuming...Ch. 3 - 14. With regard to question C13, how would the...Ch. 3 - Eukaryotic cells must sort their chromosomes...Ch. 3 - Why is it necessary for the chromosomes to...Ch. 3 - Nine-banded armadillos almost always give birth to...Ch. 3 - 18. A diploid species has four chromosomes per set...Ch. 3 - 19. Explain why the products of meiosis may not be...Ch. 3 - The period between meiosis I and meiosis II is...Ch. 3 - 21. List several ways in which telophase appears...Ch. 3 - Corn has 10 chromosomes per set, and the...Ch. 3 - The arctic fox has 50 chromosomes (25 per set),...Ch. 3 - 24. Let’s suppose that a gene affecting...Ch. 3 - 25. Describe the cellular differences between male...Ch. 3 - 26. At puberty, the testes contain a finite number...Ch. 3 - Describe the timing of meiosis I and II during...Ch. 3 - 28. Three genes (A, B, and C) are found on three...Ch. 3 - A woman with an abnormally long chromosome 13 (and...Ch. 3 - Assuming that such a fly would be viable, what...Ch. 3 - 31. What would be the sex of a human with each of...Ch. 3 - When studying living cells in a laboratory,...Ch. 3 - 2. In Morgan’s experiments, which result do you...Ch. 3 - 3. In his original studies of Figure 3.18, Morgan...Ch. 3 - How would you set up crosses to determine if a...Ch. 3 - 5. Occasionally during meiosis, a mistake can...Ch. 3 - Lets suppose that you have made a karyotype of a...Ch. 3 - Prob. 7EQCh. 3 - 8. White-eyed flies have a lower survival rate...Ch. 3 - A rare form of dwarfism that also included hearing...Ch. 3 - 10. Discuss why crosses (i.e., the experiments of...Ch. 3 - Prob. 11EQCh. 3 - 12. Experimentally, how do you think researchers...Ch. 3 - 1. In Figure 3.18, Morgan obtained a white-eyed...Ch. 3 - 3. Discuss the principles of the chromosome theory...
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- Which of the following events occur in the stage of cell division illustrated above? Select one: a. DNA replication b. Homologous chromosomes align at the equator c. Daughter cells form d. Sister chromatids separatearrow_forwardDuring the cell cycle, in which sub-phase(s) of interphase does the cell replicate its chromosomes? a. G1 phase b.S phase Oc. G2 phase Od. G1 and G2 phases Oe. G1, S, and G2 phases е. QUESTION 48 With regard to the process of mitosis, which of the following pairs is NOT matched correctly? a. Interphase - the cell grows, chromosomes replicate, and proteins are produced to prepare the cell to divide b. Prophase - chromosomes condense, and the nuclear membrane dissociates/breaks down c. Metaphase - chromosomes move toward opposite poles (or sides) of the cell d. Anaphase - sister chromatids separate e. Telophase - two distinct nuclei are formed; this is the stage immediately before cytokinesisarrow_forwardAt what point in the cell cycle does the amount of DNA double in a cell? A. G1 phase B. S phase C. Cytokinesis D. Metaphase 25.arrow_forward
- What occurs during the anaphase stage of mitosis? a.Chromosomes arrive at opposite spindle poles and become enclosed by a new nuclear envelope. b.Chromosomes pack tightly and become attached to a newly forming spindle. c.Sister chromatids separate and move toward opposite spindle poles. d.All chromosomes are aligned midway between spindle poles.arrow_forwardHomologous chromosomes align along the metaphase plate during which stage of mitosis? A. Anaphase B. Metaphase C. Telophase D. Early prophase E. Interphasearrow_forwardWhat is the purpose of mitosis? a It ensures that new nuclei have an exact copy of DNA. b It ensures the reproduction of mitochondria and chloroplasts. c It guarantees that each daughter cell has half the amount of DNA of parent cells. d It prevents the occurrence of cancer cells.arrow_forward
- What is the role of cohesin proteins in cell division? a. They organize the DNA of the chromosomes into highly condensed structures. b. They hold the DNA of the sister chromatids together. c. They help the cell divide into two daughter cells. d. They connect microtubules and chromosomes.arrow_forwardIn a cell cycle Select one: a. DNA is replicated and passed to homologous chromosomes during interphase b. DNA is replicated and passed to daughter cells during mitotic phase c. DNA and RNA are replicated and passed to parent cells during interphase d. DNA and RNA are replicated and passed to sister chromatids during mitotic phasearrow_forwardWhat part of the cell cycles are checkpoints that regulate the transition from anaphase to telophase? A. M checkpoint B. G2 checkpoint C. G1 checkpoint D. S checkpointarrow_forward
- You obscrved that the cell undergoes both growth and DNA replication. In what phase in cell cycle do these processes take place? A. In interphase where the cell prepares for division. B. In Gl phase only, where the cell increases in sıze. C. In both interphase and M phase, where the cell undergoes cytokinesis. D. In M phase only, where the number of chramosomes of parent and progeny are the same. Which checkpoints ensure that growth factors are available and check whether DNA replication in S phase has hcen successfully completed respectively? Comto ytum 1 Source: Jane Reece, et al, Campbett Biology Ninth Edition. ISan Francisco, California: Pearson Benjamin Cummings.2010ummings 2010 A. 1 and 2 B. 2 and 4 C. 3 and 1 D. 4 and 2 For Item 3, refer to the numbered options inside the box. 1. DNA replication. 2. Cell grows in size. 3. Cytokinesis occurs. 4. Nucleus divides into two. 5. Proteins are synthesized for cell division. What happen during the G1, S. G2 or interphase stage of the…arrow_forwardAttachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis? a. prophase b. prometaphase c. metaphase d. anaphasearrow_forwardIn mitosis, chromosomes separate by which specific mechanism? A. chromosomes sprout flagella and begin to swim towards the ends of the cell B. molecular motors in the kinetochore move the chromosome toward the centrioles C. centrioles attract the chromosomes by electromagnetic attraction D. centrioles begin to shorten microtubules by degrading themarrow_forward
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