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 3.6, Problem 2COMQ
A pea plant has the genotype
a. metaphase of meiosis I, T and t, R and r
b. metaphase of meiosis I, T and R, t and r
c. metaphase of meiosis II, T and t, R and r
d. metaphase of meiosis II, T and R, t and r
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A pea plant has the genotype TtRr. The independent assortmentof these two genes occurs at ________ because chromosomescarrying the ________ alleles line up independently of the chromosomes carrying the ________ alleles.a. metaphase of meiosis I, T and t, R and rb. metaphase of meiosis I, T and R, t and rc. metaphase of meiosis II, T and t, R and rd. metaphase of meiosis II, T and R, t and r
Match the specific phase of meiosis with the correct description._____ Prophase I a. Homologous chromosomes arrive atopposite poles._____ Metaphase I b. Homologous chromosomes line up._____ Anaphase I c. Chromosomes line up at the equator._____ Telophase I d. Independent assortment occurs._____ Prophase II e. Separated sister chromatids arrive atopposite poles._____ Metaphase II f. Sister chromatids remain condensed._____ Anaphase II g. Crossing over occurs._____ Telophase II h. Sister chromatids pull apart.
What is it called when chromosomes fail to separate properly during meiosis?
A. Nondisjunction
B. Karyotype
C. Chromosomal separation failure
D. Inappropriate separation
E. Karyokinesis
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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- Alternative forms of the same gene are called _________ . a. gametes c. alleles b. homologous d. sister chromatidsarrow_forwardOne difference between meiosis I and meiosis Il is that Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a chromosomes line up along the equatorial plane only in meiosis I. b cell division occurs only after meiosis II. homologous chromosomes separate in meiosis I; sister chromatids C separate in meiosis II. d chromosomes move toward opposite spindle poles only in meiosis II. DNA synthesis occurs prior to meiosis I; DNA is degraded during e meiosis II.arrow_forwardGenes G and H are located on chromosome 18. A woman with the genotype Gg Hh has a child with a man with the genotype GG HH. Unfortunately, the child has the genotype Ggg hhh and only survives for 6 months. When and in which parent did nondisjunction occur? Group of answer choices a. Meiosis II in the mother b. Meiosis I in the mother c. Meiosis I in the father d. Meiosis II in the fatherarrow_forward
- Independent assortment is a mechanism that generates significant genetic diversity among gametes. When, during meiosis, does independent assortment occur? A. Prophase of meiosis II B. Anaphase of meiosis II C. Prophase of meiosis I D. Anaphase of meiosis I E. Metaphase of meiosis I F. Metaphase of meiosis II 35.arrow_forwardConsider a diploid cell from an unknown organism that undergoes meiosis. The four gametes produced have 8, 8, 7, and 5 chromosomes. When did nondisjunction occur? a. Only meiosis I b. Mitosis c. Meiosis I and II d. Nondisjunction did not occur e. Only meiosis II Clear my choicearrow_forwardThe bulldog ant has a diploid chromosome number of two. Therefore, at the end of meiosis I, each daughter cell will have a single chromosome. There is/are _____ possible combination(s) of genes in the daughter cells of meiosis II because _____. A. none of the above because the species is polyploidy B. Only 1; there was only one chromosome per daughter cell after meiosis I C. More than 2; the non-sister chromatids of the two homologues crossed over prior to metaphase I D. 2 ; because there were two homologous chromosomes per cell at the beginning of meiosis I please helparrow_forward
- Which phase of meiosis is depicted in the drawing below?a. Metaphase of meiosis Ib. Metaphase of meiosis IIc. Anaphase of meiosis Id. Anaphase of meiosis IIarrow_forwardShown below is a photomicrograph of Rhoeo tradescantia cell undergoing meiosis. Answer the following question for the photomicrograph: a. Identify the cytogenetic abnormality observed (ex. ring, chain, laggard, bridge) b. Identify the meiotic stage in which these aberrations are observed (as shown in the photomicrograph) c. Explain how these aberrations are formed d. Will this result to sterile or fertile gametes? Explain.arrow_forwardGametogenesis is d. The process of gamete formation which goes through one division of meiosis Oc. The process of gamete formation which goes through one division of mitosis b. The process of gamete formation where the number of chromosomes is halved for 23 chromosomes a. The process of gamete formation where the number of chromosomes is doubled for 46 chromosomes None of the choices are correct Question 3 or False: Meiosis undergoes two sets of divisions.arrow_forward
- The stages of meiosis where independent assortment occurs and crossing over begins, respectively, are Select one: a. Metaphase I and prophase II b. Metaphase II and prophase I c. Metaphase I and prophase I d. Metaphase I and II and prophase I and IIarrow_forwardNondisjunction in meiosis can result in_____ . a. base-pair substitutions c. crossing over b. aneuploidy d. pleiotropyarrow_forwardWhat is the significant events of the stages in Meiosis? (explain in 2-3 sentences)a. Prophase Ib. Metaphase Ic. Anaphase Id. Telophase Ie. Prophase IIf. Metaphase IIg. Anaphase IIh. Telophase IIarrow_forward
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