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WorksheetsMeiosis
Total questions: 35
Worksheet time: 21mins
Name
Class
Date
1.
What is it called when a sperm and egg meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
2.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
3.
The chromosomes that pair up during meiosis, are called __________ chromosomes.
a)
homozygous
b)
asexual
c)
homologous
d)
genes
4.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
5.
Which letter(s) in the diagram correspond to cells that are haploid?
a)
A
b)
B
c)
C
d)
A and B
6.
Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?
a)
The same number
b)
One-fourth as many
c)
Twice as many
d)
Half as many
7.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
8.
What is one of the advantages, why is it better to reproduce sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
9.
Crossing over helps promote
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
10.
Chromosomes exchange genetic material during
a)
crossing over
b)
replication
c)
synthesis
d)
translation
11.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
12.
What do experts say is the most common form of Down Syndrome?
a)
Trisomy 47
b)
Trisomy 46
c)
Trisomy 21
d)
Trisomy 23
13.
Females have ____ and males have _____ chromosomes.
a)
XX, XY
b)
XY, XX
c)
XX, XX
d)
XY, XY
14.
A human being has a somatic cell that has 46 chromosomes. What is the haploid number found in a gamete?
a)
23
b)
46
c)
69
d)
92
15.
After meiosis II the daughter cells will contain ____ chromosomes if the original cell contained 78.
a)
78
b)
39
c)
23
d)
46
16.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
17.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
18.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
19.
Is the following cell diploid or haploid?
a)
Diploid
b)
Haploid
20.
When does replication of chromosomes occur in animal cell meiosis?
a)
Before Meiosis I and Meiosis II
b)
Before Meiosis II Only
c)
Before Meiosis I Only
d)
During Prophase I and Prophase II
21.
This type of RNA moves amino acids to the ribosomes.
a)
mRNA
b)
tRNA
c)
rRNA
22.
Meiosis is the _____.
a)
nuclear division of gametes
b)
nuclear division of body cells
c)
division of body cells
d)
division of sex cells
23.
In sexual reproduction, chromosome reduction is necessary to ___.
a)
ensure that all offspring have the correct diploid number of chromosomes
b)
ensure that all offspring have the correct haploid number of chromosomes
c)
ensure that all daughter cells are identical
24.
Is this a normal human karyotype?
a)
YES
b)
NO
25.
Is this karyotype for a male or female?
a)
MALE
b)
FEMALE
26.
Mitosis makes sure that all daughter cells are _____.
a)
genetically identical, diploid
b)
genetically identical, haploid
c)
genetically diverse, diploid
d)
genetically diverse, haploid
27.
The cells produced via meiosis are called:
a)
sex cells
b)
somatic cells
c)
body cells
d)
skin cells
28.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
29.
Unlike mitosis, meiosis in male mammals results in the formation of
a)
one haploid gamete
b)
three diploid gametes
c)
four diploid gametes
d)
four haploid gametes
30.
Goes through P.M.A.T two rounds
a)
Mitosis
b)
Meiosis
c)
Osmosis
d)
Transcription
31.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
32.
What is another reason we need meiosis?
a)
So the offspring has genes from both parents
b)
So the offspring has genes from one parent
c)
So the offspring has genes from neither parents
d)
So the offspring makes its own genes
33.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
34.
A cat has a total of 40 chromosomes in its body cells. How many in its sex cells?
a)
38
b)
20
c)
76
d)
10
35.
Meiosis would occur in which of these cells?
a)
skin cells
b)
liver cells
c)
brain cells
d)
sperm cells
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