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Genetics From Genes to Genomes 2nd Canadion Edition By Leland Hartwell - Test Bank
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,Chapter 02 - Mendelian GeneticsChapter 02
Mendelian Genetics
Multiple Choice Questions
1. The first generation of offspring from the parents is called
A. P.
B. F1.
C. F2.
D. testcross.
E. backcross.
Blooms: Remember
Difficulty: Easy
Learning Objective: 02-01 Explain how monohybrid crosses led Mendel to infer the law of segregation.
Topic: 02-06 Monohybrid crosses reveal units of inheritance and the law of segregation
2. Which of the following terms is not a type of mating cross?
A. reciprocal
B. testcross
C. monohybrid
D. dihybrid
E. dominant
Blooms: Understand
Difficulty: Easy
Learning Objective: 02-02 Distinguish between the terms gene and allele and contrast dominant alleles with recessive alleles.
Topic: 02-06 Monohybrid crosses reveal units of inheritance and the law of segregation
2-1
,Chapter 02 - Mendelian Genetics
3. Individuals having two different alleles for a single trait are called ______.
A. monohybrid
B. dihybrid
C. dominant
D. recessive
E. dizygotic
Blooms: Understand
Difficulty: Easy
Learning Objective: 02-02 Distinguish between the terms gene and allele and contrast dominant alleles with recessive alleles.
Topic: 02-06 Monohybrid crosses reveal units of inheritance and the law of segregation
4. If an individual has 10 gene pairs, how many different gametes can be formed if three of
the gene pairs are homozygous and the remaining seven gene pairs are heterozygous?
A. 49
B. 100
C. 128
D. 1024
E. 131,072
Blooms: Apply
Difficulty: Medium
Learning Objective: 02-04 Differentiate between the terms homozygous, heterozygous, genotype, and phenotype.
Learning Objective: 02-05 Analyze Mendel's law of independent assortment, and explain how Mendel proposed the law from dihybrid
crosses.
Topic: 02-07 Mendel's results reflect basic rules of probability
5. If the parents of a family already have two boys, what is the probability that the next two
offspring will be girls?
A. 1
B. 1/2
C. 1/3
D. 1/4
E. 1/8
Blooms: Apply
Difficulty: Medium
Learning Objective: 02-03 Explain Mendel's law of segregation.
Topic: 02-07 Mendel's results reflect basic rules of probability
2-2
, Chapter 02 - Mendelian Genetics
6. In some genetically engineered corn plants, a dominant gene (BT) produces a protein that is
lethal to certain flying insect pests that eat the corn plants. It was also found that the pollen
could cause death in some flying insects. If the corn plant is heterozygous for BT, what
proportion of the pollen would carry the dominant gene?
A. all pollen
B. 1/2
C. 1/3
D. 1/4
E. 1/8
Blooms: Apply
Difficulty: Medium
Learning Objective: 02-04 Differentiate between the terms homozygous, heterozygous, genotype, and phenotype.
Topic: 02-07 Mendel's results reflect basic rules of probability
Topic: 02-08 Further crosses verify the law of segregation
7. A late onset genetic trait description can be used in which of the following?
A. Cystic fibrosis
B. Sickle-cell anemia
C. Huntington disease
D. Tay-Sachs disease
E. Hurler's disease
Blooms: Remember
Difficulty: Easy
Learning Objective: 02-05 Analyze Mendel's law of independent assortment, and explain how Mendel proposed the law from dihybrid
crosses.
Topic: 02-14 A vertical pattern of inheritance indicates a rare dominant trait
2-3
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