BIOL-2011EL Chapter Notes - Chapter 2: Zygosity, Housefly, Oogenesis
25 Jun 2018
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Department
Course
Professor
Essentials of Genetics, 8e (Klug)
Chapter 2 Mitosis and Meiosis
1) During interphase of the cell cycle, ________.
A) DNA recombines
B) sister chromatids move to opposite poles
C) the nuclear membrane disappears
D) RNA replicates
E) DNA content essentially doubles
Answer: E
Section: 2.3
2) If a typical somatic cell has 64 chromosomes, how many chromosomes are expected in each
gamete of that organism?
A) 8
B) 16
C) 32
D) 64
E) 128
Answer: C
Section: 2.4
3) In an organism with 52 chromosomes, how many bivalents would be expected to form during
meiosis?
A) 13
B) 26
C) 52
D) 104
E) 208
Answer: B
Section: 2.4
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4) The ant Myrmecia pilosula is found in Australia and is named bulldog because of its
aggressive behavior. It is particularly interesting because it carries all its genetic information in a
single pair of chromosomes. In other words, 2n = 2. (Males are haploid and have just one
chromosome.) Which of the following figures would most likely represent a correct
configuration of chromosomes in a metaphase I cell of a female?
A) A
B) B
C) C
D) D
E) E
Answer: A
Section: 2.4
5) For the purposes of this question, assume that a G1 somatic cell nucleus in a female Myrmecia
pilosula contains 2 picograms of DNA. How much DNA would be expected in a metaphase I
cell of a female?
A) 16 picograms
B) 32 picograms
C) 8 picograms
D) 4 picograms
E) Not enough information is provided to answer the question.
Answer: D
Section: 2.4
6) An interesting group of ants consists of several virtually identical, closely related species, with
females having chromosome numbers of 18, 20, 32, 48, 60, 62, and 64. If one crossed a female
of species (A) with 32 chromosomes and a male species (B) with 9 chromosomes (males are
haploid, and each gamete contains the n complement), how many chromosomes would one
expect in the body (somatic) cells of the female offspring?
A) 4.5
B) 9
C) 25 – divide 32 by 2 to get 16 and add 9 to have the total of 25
D) 32
E) 41
Answer: C
Section: 2.4
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7) What is the outcome of SYNAPSIS, a significant event in meiosis?
A) side-by-side alignment of nonhomologous chromosomes
B) dyad formation
C) monad movement to opposite poles
D) side-by-side alignment of homologous chromosomes
E) chiasma segregation
Answer: D
Section: 2.4
8) In a healthy male, how many sperm cells would be expected to form from (a) 400 primary
spermatocytes? (b) 400 secondary spermatocytes?
A) (a) 800; (b) 800
B) (a) 1600; (b) 1600
C) (a) 1600; (b) 800
D) (a) 400; (b) 400
E) (a) 100; (b) 800
Answer: C
Section: 2.5
9) In a healthy female, how many secondary oocytes would be expected to form from 100
primary oocytes? How many first polar bodies would be expected from 100 primary oocytes?
A) 200; 50
B) 100; 50
C) 200; 300
D) 100; 100
E) 50; 50
Answer: D
Section: 2.5
10) Which type of cell structure is the nucleolus organizer (NOR) responsible for producing?
Answer: ribosome
Section: 2.1
11) Name two cellular organelles, each having genetic material, that are involved in either
photosynthesis or respiration.
Answer: chloroplasts and mitochondria
Section: 2.1
12) List four terms used to describe the normal morphologies, with respect to arm ratio, of
eukaryotic chromosomes.
Answer: metacentric, submetacentric, acrocentric, telocentric
Section: 2.2
3Copyright © 2014 Pearson Education, Inc.
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Document Summary
Chapter 2 mitosis and meiosis: during interphase of the cell cycle, ________, dna recombines, sister chromatids move to opposite poles, the nuclear membrane disappears, rna replicates, dna content essentially doubles. Section: 2. 3: if a typical somatic cell has 64 chromosomes, how many chromosomes are expected in each gamete of that organism, 8, 16, 32, 64, 128. Section: 2. 4: in an organism with 52 chromosomes, how many bivalents would be expected to form during meiosis, 13, 26, 52, 104, 208. 1copyright 2014 pearson education, inc: the ant myrmecia pilosula is found in australia and is named bulldog because of its aggressive behavior. It is particularly interesting because it carries all its genetic information in a single pair of chromosomes. In other words, 2n = 2. (males are haploid and have just one chromosome. ) Which of the following figures would most likely represent a correct configuration of chromosomes in a metaphase i cell of a female: a, b, c, d, e.
