Chapter 13:
Patterns of Inheritance
Practice Test
1.
What is the appearance or the observable characteristics of an organism?
a.
its phenotype
b.
its genotype
c.
its parental type
d.
its karyotype
Hint
2.
What are the chromosomes that determine the sex of an individual human?
a.
Z and W chromosomes
b.
chromosome pairs 21 and 22
c.
X and Y chromosomes
d.
X and Z chromosomes
Hint
3.
When red-flowered snapdragons are crossed with white-flowered snapdragons, all the F1 plants have pink flowers, a color intermediate between the colors of the parents. What type of inheritance is this an example of?
a.
sex-linked genes
b.
incomplete dominance
c.
multiple alleles
d.
codominance
Hint
4.
What is a trait that is only carried on an X chromosome?
a.
sex-linked trait
b.
antibody
c.
codominance
d.
incomplete dominance
Hint
5.
Genes can exist in more than one form. What are the forms of genes?
a.
alleles
b.
genomes
c.
traits
d.
factors
Hint
6.
Sometimes the phenotypes of both parents are expressed in the offspring. What type of inheritance is this an example of?
a.
incomplete dominance
b.
codominance
c.
multiple alleles
d.
sex-linked genes
Hint
7.
What are the organisms that result from a mating between two true-breeding parents that differ by just one trait?
a.
first offspring generation, or FO generation
b.
second filial generation, or F2 generation
c.
first filial generation, or F1 generation
d.
parental generation, or P generation
Hint
8.
Human blood types are determined by three different alleles. What type of inheritance pattern is this an example of?
a.
sex-linked genes
b.
codominance
c.
multiple alleles
d.
incomplete dominance
Hint
9.
What is the failure of homologous chromosomes to separate in meiosis?
a.
incomplete dominance
b.
codominance
c.
nondisjunction
d.
independent assortment
Hint
10.
Suppose a trait has two alleles, M and m. If one parent is homozygous for the recessive trait, what is that parent's genotype?
a.
MM
b.
Mm
c.
mm
d.
MMm
Hint
