Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Textbook Question
Chapter 12, Problem 2TYK
After S phase, what comprises a single chromosome?
a. two daughter chromosomes
b. a double-stranded DNA molecule
c. two single-stranded DNA molecules
d. two sister chromatids
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Students have asked these similar questions
Which process leads to independent assortment?
a)The process of separating chromosomes
b)The random alignment of homologs with respect to the others on the metaphase plate
c)The process of forming the mitotic spindle
d)The process of cytokinesis
What 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.
a) In which stage of mitosis do chromosomes condense?
(b) If a eukaryotic organism has a total of 34 chromosomes, how many pairs will the chromosomes be arranged in?
(c) Define homologous chromosomes.
Chapter 12 Solutions
Biological Science (6th Edition)
Ch. 12 - 1. Which statement about the daughter cells...Ch. 12 - After S phase, what comprises a single chromosome?...Ch. 12 - Progression through the cell cycle is regulated by...Ch. 12 - 4. What major events occur during anaphase of...Ch. 12 - 5. Identify at least two events in the cell cycle...Ch. 12 - 6. What evidence suggests that during anaphase,...Ch. 12 - 7. Evaluate each of the following defects. Which...Ch. 12 - Prob. 8TYUCh. 12 - Prob. 9TYPSSCh. 12 - Prob. 10TYPSS
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- Genetic recombination occurs by which process? a. independent assortment b. crossing over c. chromosome segregation d. sister chromatidsarrow_forwardWhich describes a role for the kinetochore microtubules during mitosis? Polymerization drives anaphase A. Depolymerization drives anaphase B. Depolymerization drives anaphase A. Depolymerization drives separation of centrosomes (spindle poles) during prometaphase.arrow_forwardWhen does DNA replication occur during meiosis? a. during telophase b. during prophase I c. during anaphase and telophase d. during interphase before meiosis I beginsarrow_forward
- If a body cell with 36 chromosomes divides to create more cells for growth and repair, which explanation best describes how many chromosomes each new cell has?arrow_forwardB. Meiosis C. Could be either mitosis or meiosis QUESTION 5 What is the role of nonkinetochore microtubules? A. They move the chromosomes to either side of the cell during cell division B. They elongate the cells prior to cell division OC. They aid in DNA replication prior to cell division D. they help to create the cell plate Click Save and Submit to save and submit. Click Save All Answers to save all answers.arrow_forwardMULTIPLE CHOICE If a liver cell in an insect contains 24 chromosomes, how many chromosomes are found in its sperm? a.) 6 b.) 12 c.) 24 d.) 48arrow_forward
- What process must happen in order for sister chromatids to be formed? a crossing over b DNA replication c relaxation of chromosomes during interphase d meiosisarrow_forwardName the phases of the cell cycle. b) During which phases are the chromosomes and then the cytoplasm split, respectively? c) Describe one mechanism that is used to regulate the cell cycle.arrow_forwardExplain the significance of the difference in the number of chromosomes.arrow_forward
- Give typing answer with explanation and conclusion Eukaryotic chromosomes are composed by __________ molecules associated with proteins, mostly some __________ proteins called _________. A) RNA, acidic, gamma-globulins B) DNA, acidic, phosphatases C) DNA, basic, histones D) RNA, neutral, kinasesarrow_forwardDraw a structure of chromosomesarrow_forwardA twisted ladder that makes up the chromosomes is made of __________arrow_forward
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