Chapter 10:
Mendel and Meiosis
Practice Test
1.
The 9:3:3:1 ratio observed by Mendel results in his law of __________.
a.
heredity
b.
independent assortment
c.
dominance
d.
segregation
Hint
2.
A phenotype that appears whenever it is present is called a __________ trait.
a.
recessive
b.
dominant
c.
hybrid
d.
dihybrid
Hint
3.
If an organism has two identical genes for a trait it is __________.
a.
heterozygous
b.
segregated
c.
homozygous
d.
a zygote
Hint
4.
If an organism has a gamete containing 12 chromosomes, one would expect each of its body cells to contain _________.
a.
12 chromosomes
b.
24 chromosomes
c.
two nuclei
d.
6 chromosomes
Hint
5.
The chromatids in a tetrad exchange genetic information in a process called __________.
a.
zygote formation
b.
diploid formation
c.
mitosis
d.
crossing over
Hint
6.
Which biological process explains the results Mendel observed?
a.
asexual reproduction
b.
mitosis
c.
cell division
d.
meiosis
Hint
7.
Transfer of male pollen grains to the female organ of a flower is __________.
a.
gamete formation
b.
zygote formation
c.
fertilization
d.
pollination
Hint
8.
The 3:1 ratio observed by Mendel results in his law of __________.
a.
dominance
b.
independent assortment
c.
segregation
d.
heredity
Hint
9.
In Mendel`s monohybrid crosses, the __________ trait appeared to disappear in the first generation, but reappeared in the second generation.
a.
superior
b.
recessive
c.
dominant
d.
dihybrid
Hint
10.
A zygote is produced by the joining of __________.
a.
sperm
b.
nuclei
c.
eggs
d.
gametes
Hint
11.
The Father of Genetics is __________.
a.
Hardy-Weinberg
b.
Gregor Mendel
c.
Thomas Hunt Morgan
d.
Reginald Punnett
Hint
12.
The uniting of male and female gametes is called __________.
a.
meiosis
b.
genetics
c.
mitosis
d.
fertilization
Hint
13.
Genetic variation is produced by __________.
a.
cell division
b.
asexual reproduction
c.
mitosis
d.
meiosis
Hint
14.
How many chromosome combinations are possible in humans?
a.
23
b.
223
c.
more than 8 million
d.
2
Hint
15.
During which stage of the cell cycle does a cell replicate chromosomes?
a.
interphase
b.
telophase II
c.
metaphase II
d.
prophase I
Hint
