Genetics Test Bank Chapter 62 - Laboratory Manual Anatomy & Physiology Cat 4e Test Bank by Terry Martin. DOCX document preview.
Lab Manual for Human Anatomy and Physiology, 4e (Martin)
Chapter 62 Genetics
1) If a person has two different alleles for a particular trait, then the person is ________ for that trait.
A) recessive
B) homozygous
C) codominant
D) dominant
E) heterozygous
2) In complete dominance, a dominant gene will be expressed if the person is either homozygous or heterozygous for that trait.
3) The specific combination of alleles that a person inherits for a certain trait is called the
A) locus.
B) phenotype.
C) genome.
D) homologous chromosome.
E) genotype.
4) Carriers of a recessive trait are always heterozygous for that trait.
5) Sex-linked traits are
A) inherited from one of the sex chromosomes.
B) only found in males.
C) inherited from the X chromosome only.
D) only found in females.
E) inherited from the Y chromosome only,
6) Colorblindness is an X chromosome-linked, recessive trait. None of the children of a normal mother (XCXC) and a colorblind father (XcY) could possibly be colorblind.
7) In familial hypercholesterolemia, homozygous people with the abnormal gene have extremely high cholesterol, while heterozygous people have somewhat high cholesterol. This type of inheritance is called
A) complete dominance.
B) incomplete dominance.
C) multiple alleles.
D) codominance.
E) sex-linked inheritance.
8) In sex-linked traits, the cells of all offspring contain two copies of the genes for these traits.
9) Inheritance of the ABO blood group is an example of
A) complete dominance only.
B) incomplete dominance only.
C) sex-linked inheritance only.
D) incomplete dominance and sex-linked inheritance.
E) codominance and multiple alleles.
10) Astigmatism, a condition in which a defect in the curvature of the cornea or lens produces areas of blurred vision, is an example of a recessive trait.
11) If a husband and wife are both carriers of albinism, which is a recessive trait with two alleles, what is the probability that each of their children will be albino?
A) 0%
B) 25%
C) 50%
D) 75%
E) 100%
12) A male with red-green colorblindness could have received the recessive gene for this condition from either parent.
13) What blood types could the children have, if their mother was type A (IAi) and their father was type B (IBi)?
A) A or B
B) O
C) A, B, AB, or O
D) AB or O
E) A, B, or AB
14) What do the traits of tongue roller, freckles, and dimples have in common?
A) They all have multiple alleles.
B) They are all recessive traits.
C) They are all inherited by codominance.
D) They are all dominant traits.
E) They are all inherited by incomplete dominance.
15) In coin toss experiments, as well as in traits inherited by children in the same family, each event is independent of all others; in other words, chance does not have a memory of previous events.
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Laboratory Manual Anatomy & Physiology Cat 4e Test Bank
By Terry Martin