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Meiosis
Name:
1.
Date:
The diagram shown represents a cell that will
undergo mitosis. Which diagrams below best
illustrate the nuclei of the daughter cells that result
from a normal mitotic cell division of the parent
cell shown?
A.
+
C.
2.
B.
+
4.
+
D.
There are multiple alleles for the ABO blood
group. Why are there only two of these alleles
normally present in any one individual?
A.
There are not enough nucleotides in a red
blood cell to produce a third allele.
B.
Each parent contributes only one allele for the
ABO blood group to the o spring.
C.
Each allele in the ABO group must be either
dominant or recessive.
D. Blood group alleles are not segregated during
meiosis.
+
Meiotic cell division in animals is directly
responsible for the
A.
formation of gametes
B.
fertilization of an egg
C.
growth of a cell
5.
D. production of muscle cells
Traits controlled by genes on the X-chromosome
are said to be
A.
sex-linked
B.
incompletely dominant
C.
homozygous
D. mutagenic
3.
In a species of corn, the diploid number of
chromosomes is 20. What is the number of
chromosomes found in each of the normal egg
cells produced by this species?
A.
5
B.
10
C.
20
D. 40
page 1
6.
Which process is represented by the diagram
shown?
9.
10.
A.
germination
B.
fertilization
C.
mitotic cell division
D. meiotic cell division
Which usually occurs in the rst meiotic division
of a primary sex cell?
A.
fertilization
B.
polyploidy
C.
crossing-over
D. di erentiation
In a particular variety of corn, the kernels turn
red when exposed to sunlight. In the absence of
sunlight, the kernels remain yellow. Based on this
information, it can be concluded that the color of
these corn kernels is due to the
A.
e ect of sunlight on transpiration
B.
law of incomplete dominance
C.
principle of sex linkage
D. e ect of environment on gene expression
7.
Occasionally during meiosis, a single homologous
chromosome pair may fail to separate. A human
gamete produced by such a nondisjunction would
have a chromosome number of
A.
8.
23
B.
24
C.
25
D. 26
11.
In a fruit y in which the diploid number of
chromosomes is 8, the chromosome number in
each gamete is normally
A.
16
B.
2
C.
8
Which is the result of normal meiosis and
fertilization in humans?
A.
multiple alleles
B.
new gene combinations
C.
a chromosome number of 92
D. a polyploid condition
D. 4
page 2
Meiosis
12.
During egg cell production in a human female, the
21st pair of chromosomes may fail to separate.
This failure to separate is known as
A.
crossing-over
B.
C.
polyplody
D. nondisjunction
15.
gene mutation
The process by which homologous chromosomes
exchange segments of DNA is
A.
segregation
B.
crossing-over
C.
fertilization
D. independent assortment
13.
16.
If there are 40 chromosomes in each body
cell of an organism, what is the total number
of chromosomes normally present in a gamete
produced by that organism?
A.
10
B.
20
C.
40
D. 80
Normal mitosis results in the formation of two
nuclei that are genetically
A.
identical to each other and identical to the
original nucleus
B.
identical to each other but di erent from the
original nucleus
C.
di erent from each other but identical to the
original nucleus
D. di erent from each other and di erent from
the original nucleus
14.
Synapsis and disjuntion are processes directly
involved in
A.
mitotic cell division
B.
meiotic cell division
C.
fertilization
D.
17.
ssion
During synapsis, chromatids in homologous pairs
of chromosomes often twist around each other,
break, exchange segments, and rejoin. This process
usually contributes to
A.
the formation of polyploid o spring
B.
nondisjunction of homologous chromosomes
C.
the production of identical twins
D. increased variability in o spring
page 3
Meiosis
18.
The two parts of a double-stranded chromosome
are held together by a
A.
nucleolus
B.
C.
centromere
D. centriole
21.
spindle ber
The extra chromosome found in the cells of
humans with Down's syndrome is the result of
A.
failure of the developing embryo to undergo
meiotic cell division
B.
failure of the chromatids to replicate between
mitotic cell divisions
C.
nondisjunction during meiotic cell division in
the gonads of a parent
D. nondisjunction during mitotic cell division in
the muscle cells of a parent
19.
20.
The gamete produced in the ovary of an animal is
the
A.
egg cell
B.
C.
spore
D. zygote
22.
sperm cell
23.
A diploid cell of a normal human male contains
A.
22 autosomes and two Y-chromosomes
B.
22 pairs of autosomes and two Y-chromosomes
C.
22 pairs of autosomes, one X-chromosome,
and one Y-chromosome
In sexually reproducing species, doubling of the
chromosome number from generation to generation
is prevented by events that take place during the
process of
A.
gametogenesis
B.
cleavage
C.
nondisjunction
D. fertilization
The accompanying diagram shows parts of a
ower. In which structure does meiosis occur?
D. 22 autosomes and two X-chromosomes
A.
page 4
A
B.
B
C.
C
D. D
Meiosis
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Meiosis
12/12/2016
1.
Answer:
A
21.
Answer:
C
2.
Answer:
A
22.
Answer:
A
3.
Answer:
B
23.
Answer:
A
4.
Answer:
B
5.
Answer:
A
6.
Answer:
D
7.
Answer:
B
8.
Answer:
D
9.
Answer:
C
10.
Answer:
D
11.
Answer:
B
12.
Answer:
D
13.
Answer:
B
14.
Answer:
B
15.
Answer:
B
16.
Answer:
A
17.
Answer:
D
18.
Answer:
C
19.
Answer:
A
20.
Answer:
C