Chapter 12:
Patterns of Heredity and Human Genetics
Practice Test
1.
Color-blindness and hemophilia are two examples of human __________.
a.
multiple alleles
b.
sex linkage
c.
polygenic inheritance
d.
inheritance patterns
Hint
2.
Internal differences in males and females are partially results of __________.
a.
polygenic inheritance
b.
multiple alleles
c.
chromosome number
d.
hormones
Hint
3.
Patterns of inheritance that are explained by Mendel`s experiments are __________.
a.
simple Mendelian inheritance
b.
sex linkage
c.
multiple alleles
d.
codominance
Hint
4.
A human with blood type I
B
i would have the phenotype __________.
a.
B
b.
O
c.
A
d.
AB
Hint
5.
The actual genes that an organism has are its __________.
a.
gender type
b.
genotype
c.
physical appearance
d.
phenotype
Hint
6.
How many different kinds of gametes can be produced by an organism that has the genotype AaBbCc?
a.
16
b.
8
c.
6
d.
3
Hint
7.
Parakeets can be many colors, but any one parakeet has only two alleles for color. This indicates that the inheritance pattern of color in parakeets is __________.
a.
incomplete
b.
polygenic
c.
codominant
d.
multiple allelic
Hint
8.
The ratio expected when crossing two pink snapdragons is ___________.
a.
1:01
b.
9:3:3:1
c.
1:02:01
d.
3:01
Hint
9.
Human blood types are one example of __________ traits.
a.
codominant
b.
multiple gene
c.
multiple allelic
d.
incompletely dominant
Hint
10.
The gene for white eyes in fruit flies is located only __________.
a.
on the Y chromosome
b.
on the X chromosome
c.
in males
d.
on the autosomes
Hint
11.
Trisomy of chromosome 21 results in a condition called __________.
a.
XYY male
b.
Klinefelter syndrome
c.
Down syndrome
d.
Turner syndrome
Hint
12.
Tay-Sachs disease attacks the __________ system.
a.
circulatory
b.
reproduction
c.
nervous
d.
respiratory
Hint
13.
If a cow has both red hairs and white hairs, the inheritance pattern for the hair colors is likely to be __________.
a.
codominance
b.
incomplete dominance
c.
polygenic inheritance
d.
multiple alleles
Hint
14.
If a pedigree shows that a human trait seems to skip generations the trait is probably __________.
a.
sex linked
b.
dominant
c.
recessive
d.
polygenic
Hint
15.
The type of inheritance that results in many alleles contributing small, but equal portions of a trait is _________.
a.
sex linkage
b.
multiple alleles
c.
polygenic inheritance
d.
Mendelian inheritance
Hint
