Heredity Test Practice Questions With Answer Key Page 4
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56. The pedigree below shows the inheritance of
probability that this individual would have inherited
sickle-cell anemia, a genetic disease, in a particular
the disease?
family. The shaded symbols represent individuals
A. 25%
with sickle-cell anemia.
B. 100%
C. 50%
D. 75%
19. The pedigree below shows the inheritance of
sickle-cell anemia, a genetic disease, in a particular
family. The shaded squares represent males with
sickle-cell anemia. The shaded circles represent
According to the pedigree, how many grandchildren
females with sickle-cell anemia.
do the parents in generation I have?
A. 1
B. 5
C. 4
D. 0
17. What is determined by genes?
Which of the following is true about the individual
A. the learned traits of an organism
highlighted in red?
This individual has a grandmother with
B. the inherited traits of an organism
A.
sickle-cell anemia.
C. acquired characteristics
B. This individual has sickle-cell anemia.
D. the lifestyle of an organism
This individual has a grandfather with sickle-
C.
cell anemia.
18. The pedigree below shows the inheritance of
This individual has two parents with sickle-
D.
sickle-cell anemia in a particular family. The shaded
cell anemia.
symbols represent individuals with sickle-cell
anemia.
20. In humans, the allele for brown eyes (B) is
dominant to the allele for blue eyes (b). What is the
probability that two heterozygous brown-eyed
parents will have a child with blue eyes?
B b
B ? ?
Sickle-cell anemia is a genetic disorder of the blood
in which the shape of red blood cells is distorted,
b ? ?
resulting in a variety of health problems. The gene
A. 25%
copy for normal blood cell production (H) is
B. 75%
dominant to the gene copy for sickle cell production
(h).
C. 0%
D. 50%
The individual highlighted in red in the pedigree
chart inherited sickle-cell anemia. What was the
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