Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 16, Problem 5TY
Summary Introduction
Introduction: The process of replication takes place in the S phase of the eukaryotic cell cycle. Replication of chromatids results in the formation of a replicated chromosome. The chromatids are separated during the process of the mitotic cell cycle after the completion of replication in the S phase of the cell cycle.
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Which of the following situations does not describes a chromosomal mutation?
Select one:
a. A cytosine nucleotide is substituted for thymine nucleotide in a gene.
b. A portion of Chromosome 4 is deleted during interphase of meiosis.
c. The sister chromatids of Chromosome 18 do not separate during anaphase II.
d. A section of Chromosome 17 is duplicated leading to problems in the peripheral nervous system.
Using the symbols above:
1. Given: Adult diploid cell (2n = 8)
2. Show the condition of the chromosomes in the following Mitosis phases (illustrate):
a. prophase
b. metaphase
c. anaphase
d. telophase/cytokinesis
the kinetochore of a metaphase chromosome is
a. The ends of the chromosome that are duplicated by telomerase.
b. The repeated DNA sequence at the centromere that is composed of cohesion protein.
c. A protein complex that assembles on the outer surface of the chromosome to mediate attachment to the kinetochore microtubules
d. The protein complext that contains cohesion and mediates attachment of the sister chromatids.
Chapter 16 Solutions
Biology
Ch. 16.1 - Researchers usually treat cells with drugs that...Ch. 16.1 - Which phases make up interphase?Ch. 16.1 - Prob. 1CSCh. 16.1 - Prob. 1EQCh. 16.1 - The Eukaryotic Cell Cycle CoreSKILL What...Ch. 16.1 - Prob. 3EQCh. 16.2 - Prob. 1CCCh. 16.2 - Mitotic Cell Division Concept Check: What are the...Ch. 16.3 - Core Skill: Modeling The goal of this modeling...Ch. 16.4 - Sexual Reproduction Concept Check: What is the...
Ch. 16.5 - Variation in Chromosome Structure and Number...Ch. 16 - Prob. 1TYCh. 16 - Prob. 2TYCh. 16 - Prob. 3TYCh. 16 - Prob. 4TYCh. 16 - Prob. 5TYCh. 16 - Which of the following is not an event of anaphase...Ch. 16 - Prob. 7TYCh. 16 - Which of the following statements accurately...Ch. 16 - Prob. 9TYCh. 16 - Aneuploidy may be the result of a. duplication of...Ch. 16 - Prob. 1CQCh. 16 - Prob. 2CQCh. 16 - Prob. 3CQCh. 16 - Prob. 1COQCh. 16 - A diploid eukaryotic cell has 10 chromosomes (5...
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- a. What is the diploid number of chromosomes for a human? b. What is the haploid number of chromosomes for a human? Which cells are considered diploid, gametes or somatic cells? C. d. Which cells are considered haploid, gametes or somatic cells?arrow_forwardMetacentric chromosomes have a centromere located: A. near the middle of the chromosome (chromosome has two arms of approx. equal length) B. towards one end (chromosome has one long arm and one short arm) C. near one end of the chromosome (chromosome has one long arm and a knob at the other end)arrow_forwardb. An example of autosome and heterochromosome c. An example of homologous chromosome, sister chromatid and centromere. d. The total number of chromosomes in a metaphase kangaroo cell. e. A sentence to explain the difference between the terms gene and allele that might apply to this species. 5) Suppose that in a species of flowering plant, we cross a plant with red flowers with a short stem with a plant with blue flowers with a long stem. The offspring all have mauve flowers and a long stem. The two characters, flower color and stem length, are found on different chromosomes. What can you conclude about the mode of inheritance of each of the characteristics of this plant species? Incomplete dominance or codominance: C"C", simple A/a dominance b If a progeny with long-stemmed mauve flowers from FI is crossed with a plant with short-stemmed mauve flowers, what proportion of the progeny will have the same genotype as either of the parents? Compulsory Punnett grid. ONA and the principles…arrow_forward
- How is homologous recombination for DNA repair different from recombination in meiosis? Choose all correct answers. a. HR in DNA repair requires a double-strand break, but meiotic recombination does not. b. HR in DNA repair requires strand invasion, but meiotic recombination does not. c. HR in DNA repair results in identical chromosomes. Meiotic recombination results in changes to the DNA sequence of the "repaired" chromosomes. d. HR in DNA repair uses a newly synthesized identical chromosome as a template. Meiotic recombination uses a homologous chromosome as a template.arrow_forwardCucumis sativus (cucumber) is a diploid plant with 7 chromosome pairs. Determine the following as its cell divides by mitosis or meiosis: a. number of centromeres at Metaphase I b. number of univalents at Anaphase I (per pole) c. number of chromatids at Prophase d. chromosome number at Metaphase chromosome number at Telophase I (after cytokinesis) С. е.arrow_forwardIn the eukaryotic nucleus during interphase, a strand of chromatin consisting of eight conserved histone proteins, and a short region of double-stranded DNA wrapped around them, is: A. properly referred to as the radial miniband B. properly referred to as the supersolenoid C. properly referred to as the chromosome D. properly referred to as the nucleosome E. properly referred to as the solenoidarrow_forward
- A medical student is studying a liver biopsy taken from a regenerating liver following a partial hepatectomy. The student sees a dividing cell in which the chromosomes are aligned on a plate. Which of the following best describes the character of the chromosomes in the plate? A. 23 chromosomes with 2N DNA total and with each chromosome having one chromatid B. 23 chromosomes with 4N DNA total and with each chromosome having two chromatids C. 46 chromosomes with 2N DNA total and with each chromosome having one chromatid D. 46 chromosomes with 4N DNA total and each chromosome having two chromatids E. 92 chromosomes with 2N DNA total and with each chromosome having two chromatidsarrow_forward1) What phase of mitosis is this? Answer: 2) What is the indicated structure 1? select one. a. chromosome b. chromosome with two sister chromatids c. centrioles/centrosome d. spindle fibres e. metaphase plate 3)If the diploid (2n) number of this cell is 8 how many chromosomes are present? 4) If the diploid (2n) number of this cell is 8 how many sister chromatids are present? 5) If the diploid (2n) number of this cell is 8 how many homologous pairs are present?arrow_forwardThe amount of DNA per cell of a particular species is measured in cells found at various stages of meiosis and the following amounts are obtained: 3.7 pg , 7.3 pg , and 14.6 pg. Match the amounts of DNA above with the corresponding stages of the cell cycle. You may use more than one stage for each amount of DNA . A. G2 B. After both telophase II and cytokinesis C. Metaphase IIarrow_forward
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