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Test Bank for Introduction to Genetic Analysis 11th Edition by Griffiths.
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Test Bank for Introduction to Genetic Analysis 11th Edition by Griffiths.
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Test Bank for Introduction to Genetic Analysis 11th Edition by GriffithIBSN 9781464109485
1
,Chapter 2
Single-Gene Inheritance
MULTIPLE-CHOICE QUESTIONS
Sections 2.1. and 2.2. (Single gene inheritance, The chromosomal basis of single-gene
inheritance patterns)
1. If a plant of genotype A/a is selfed, and numerous offspring are scored, what proportion of the
progeny is expected to have homozygous genotypes?
A) 0
B) 25%
C) 50%
D) 75%
E) 100%
Answer: C
2. What is the maximum number of heterozygous genotypes that could be produced
by monohybrid self? A) 1
B) 2
C) 3
D) 4
E) 6
2
, Answer: A
3. A plant is heterozygous at three loci. How many different gamete genotypes can it theoretically
produce with respect to these three loci?
A) 2
B) 3
C) 4
D) 8
E) 16
Answer: D
4. In mountain rabbits, the EL-1 gene is located on chromosome 3. Four alleles of this gene have
been identified in the population. With respect to EL-1, what is the maximum number of
genotypes in the progeny of a single cross between two mountain rabbits? A) 1
B) 2
C) 3
Full all chapters instant download please go to Solutions Manual, Test Bank site: downloadlink.org
D) 4
E) 6
Answer: D
5. A wild-type strain of haploid yeast is crossed to a mutant strain with phenotype d. What
phenotypic ratios will be observed in the progeny?
A) all wild type
B) 75% wild type and 25% mutant (d)
C) 50% wild type and 50% mutant (d)
D) 25% wild type and 75% mutant (d)
E) all mutant (d)
Answer: C
Section 2.3. (The molecular basis of Mendelian inheritance patterns)
6. Mice (Mus musculus) have 40 chromosomes per diploid cell (2n = 40). How many double-
stranded DNA molecules and how many chromosomes are there in a mouse cell that is in the G2
stage of the cell cycle?
A) 40 DNA molecules and 20 chromosomes
B) 40 DNA molecules and 40 chromosomes
C) 40 DNA molecules and 80 chromosomes
D) 80 DNA molecules and 40 chromosomes
E) 80 DNA molecules and 80 chromosomes
3
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