Chapter 11:
Human Genetics
Practice Test
1.
If a normal father and a mother who is a carrier of the allele for hemophilia have children, what is the probability that they will have a son who has hemophilia?
a.
100%
b.
25%
c.
0%
d.
50%
Hint
2.
Cystic fibrosis is inherited when a child receives a recessive allele from each parent. What is the probability that parents who are both heterozygous for cystic fibrosis will have a child with this disease?
a.
75%
b.
25%
c.
50%
d.
100%
Hint
3.
What body systems does the disease cystic fibrosis affect?
a.
the endocrine and digestive systems
b.
the respiratory and digestive systems
c.
the circulatory and respiratory systems
d.
the circulatory and endocrine systems
Hint
4.
The presence of three of one kind of chromosome is known as _________ .
a.
trisomy
b.
karyotyping
c.
hemophilia
d.
translocation
Hint
5.
What two kinds of ions are involved in cystic fibrosis?
a.
chloride and iron ions
b.
iron and hydrogen ions
c.
sodium and chloride ions
d.
sodium and sulfur ions
Hint
6.
Which of these is NOT a normal treatment for people with sickle-cell anemia?
a.
antibiotics
b.
physical therapy
c.
drugs that increase oxygen-carrying capacity of blood cells
d.
blood transfusions
Hint
7.
By how many codons is the gene for sickle-cell anemia hemoglobin different from normal hemoglobin?
a.
three
b.
one
c.
two
d.
four
Hint
8.
Which of these human disorders is the result of trisomy?
a.
Down syndrome
b.
hemophilia
c.
red-green color blindness
d.
Huntington's disease
Hint
9.
What is a picture of human chromosomes?
a.
ultrasound
b.
chorionic biopsy
c.
karyotype
d.
fetoscope
Hint
10.
What is the disease in which blood does not clot normally?
a.
cystic fibrosis
b.
Huntington's disease
c.
sickle-cell anemia
d.
hemophilia
Hint
