Biology: A Guide to the Natural World, 5e (Krogh)
Chapter 12 Units of Heredity: Chromosomes and Inheritance
1) A woman who is a carrier for the
... [Show More] hemophilia gene has a child with a man who does not have hemophilia. Which prediction is correct?
A) All of the sons and none of the daughters will have hemophilia.
B) All of the daughters and none of the sons will have hemophilia.
C) Half of the sons and half of the daughters will have hemophilia.
D) Half of the sons and none of the daughters will have hemophilia.
E) Half of the daughters and none of the sons will have hemophilia.
Answer: D
Topic: Section 12.1
Skill: Application/Analysis
2) A woman who does not carry the color-blindness allele has children with a man who is color blind. What proportion of their children will be color blind?
A) all
B) 1/4
C) 1/2
D) 3/4
E) none
Answer: E
Topic: Section 12.1
Skill: Application/Analysis
3) Regarding the human sex chromosomes, which statement is correct?
A) The Y chromosome carries a greater number of genes than does the X chromosome.
B) X and Y are different in size but carry nearly equal numbers of genes.
C) The X chromosome carries more genes than does the Y chromosome.
D) The X chromosome carries only gender-related genes.
E) The X chromosome carries the genes for the development of male phenotype.
Answer: C
Topic: Section 12.1
Skill: Knowledge/Comprehension
4) What percent of males have some degree of color blindness?
A) 0.5 percent
B) 5 percent
C) 0.8 percent
D) 8 percent
E) 10 percent
Answer: D
Topic: Section 12.1
Skill: Knowledge/Comprehension
5) A trait such as albinism is seen with equal frequency in males and females. Two people who do not have the trait might have offspring who do have the trait, at a frequency of approximately one in four. What can you conclude about the inheritance of this trait?
A) recessive, X-linked
B) recessive, autosomal
C) recessive, caused by polyploidy
D) dominant, X-linked
E) dominant, autosomal
Answer: B
Topic: Section 12.1
Skill: Application/Analysis
6) What is a recessive disorder?
A) a genetic disorder with two functioning alleles
B) a genetic disorder that will express itself in the presence of one functioning allele
C) a genetic disorder that will express itself in the presence of two recessive alleles
D) a genetic disorder that involves change in chromosome number
E) a genetic disorder that involves change in chromosome structure [Show Less]