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WorksheetsMills: 10.1 Meiosis
Total questions: 65
Worksheet time: 46mins
Name
Class
Date
1.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
2.
Which of the following cell types is formed by meiosis?
a)
muscle cells
b)
skin cells
c)
sperm cells
d)
blood cells
3.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
4.
Which of the following best describes meiosis?
a)
It is carried out in all tissues theat require cell replacement
b)
It occurs only in cells in the reproductive structures of an organism
c)
It happens in all of the tissues except the brain and spinal cord
d)
It is the first stage of mitosis
5.
Which best describes the process shown?
a)
mutation in which the DNA content of the gene is ltered
b)
segregation of sister chromatids
c)
condensation and segregation of the alleles
d)
crossing-over which alleles are exchanged
6.
Which of the following represents chromosome # during fertilization?
a)
n+n=2n
b)
n=n
c)
2n=n+n
d)
2n=2n
7.
Which of the following best explains why the chromosome number is an even number in organisms?
a)
It is only by coincidence, many organisms have an odd number
b)
The diploid number is always even so that when mitosis occurs each cell gets the same number of chromosmes
c)
The diploid chromosome number represents pairs of chromosomes, one from ech parent, so that it is always an even number
d)
Chromosomes double very time the cell divides, so after the first division, the number is always even
8.
If an intestinal cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
9.
What is one advantage of sexual reproduction?
a)
offspring are identical to parents
b)
offspring are resistant to viruses
c)
offspring are born live, rather thna from eggs
d)
offspring inherit a wider variety of genetic information
10.
How is the process used to produce sex cells different from the process used to produce body cells?
a)
only the process used to make sex cells uses spindle fibers
b)
only the process used to make sex cells produces haploid cells
c)
only the process used to make sex cells can result in mutations
d)
only the process used to make sex cells requires DNA replication
11.
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
12.
How many sperm are produced through the process of meiosis?
a)
Two that are identical.
b)
Two that are unique.
c)
Four that are identical.
d)
Four that are unique.
13.
A haploid cell has
a)
one-half of a set of chromosomes
b)
one set of chromosomes
c)
two sets of chromosomes
d)
four sets of chromosomes
14.
Crossing over is important because....
a)
It prevents mutations from entering the gametes.
b)
It allows for even distribution of chromosomes in the gametes.
c)
It allows for more genetic diversity of gametes.
d)
It allows for genetic uniformity of gametes.
15.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
16.
The cells produced via meiosis are called:
a)
sex cells
b)
somatic cells
c)
body cells
d)
skin cells
17.
A human usually has xx amount of chromosomes.
a)
6
b)
22
c)
4
d)
46
18.
What happens to the chromosome number during meiosis?
a)
It doubles
b)
It stays the same
c)
It divides in half
d)
It becomes diploid
19.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
mutagenesis
c)
hybridization
d)
fertilization
20.
Crossing over occurs in...
a)
Prophase 1
b)
Prophase 2
c)
Metaphase 1
d)
Metaphase 2
21.
In, what phase of meiosis does crossing over occur?
a)
prophase I
b)
prophase II
c)
anaphase I
d)
metaphase I
22.
The result of meiosis is:
a)
two diploid cells
b)
two haploid cells
c)
four diploid cells
d)
four haploid cells
23.
During meiosis I, what happens?
a)
Sister chromatids are split
b)
Homologous chromosomes are split
c)
Four cells are created
d)
None of the other choices are correct
24.
How many daughter cells are produced at the end of meiosis?
a)
1
b)
2
c)
3
d)
4
25.
What is a tetrad?
a)
4 chromosmes
b)
4 chromatids
c)
2 chromatids
d)
6 chromosomes
26.
The haploid number of chromosomes for humans is
a)
46
b)
43
c)
23
d)
26
27.
How many times in meiosis does the cell divided?
a)
2
b)
4
c)
3
d)
1
28.
How many cells are created during Telophase II?
a)
1
b)
2
c)
3
d)
4
29.
How many cells are created during Telophase I?
a)
1
b)
2
c)
3
d)
4
30.
Crossing over is important because....
a)
It prevents mutations from entering the gametes.
b)
It allows for even distribution of chromosomes in the gametes.
c)
It allows for more genetic diversity of gametes.
d)
It allows for genetic uniformity of gametes.
31.
products of meiosis are genetically
a)
different
b)
identical
32.
number of divisions in meiosis
a)
1
b)
2
33.
what cells do meiosis produce
a)
sex cells (sperm and egg)
b)
everything over than sex cells
34.
The point on the chromosome where the two chromatids are held together is the
a)
centromere
b)
centriole
c)
chromosome
d)
chromatid
35.
Two identical copies of a chromosome is
a)
centromere
b)
centrosome
c)
chromatid
d)
chromosome
36.
what happens during the S phase
a)
cell growth
b)
DNA synthesis
37.
what is a zygote
a)
fertilized egg
b)
egg
c)
sperm
38.
how many of each chromosome is is a diploid cell
a)
1
b)
2
39.
when are tetrads formed in meiosis
a)
prophase 1
b)
prophase 2
c)
metaphase 2
40.
what does meiosis start with
a)
2N=46
b)
1N=46
c)
2N=23
d)
1N=23
41.
what does meiosis end with
a)
2N=46
b)
1N=46
c)
2N=23
d)
1N=23
42.
what does 2 mean in 2N=46
a)
diploid
b)
haploid
43.
What is it called when the gametes meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
44.
Structure A refers to the _____.
a)
chromatid
b)
chromosome
c)
centromere
45.
Structure B is pointing to the _____.
a)
chromosome
b)
centromere
c)
DNA
d)
chromatid
46.
Structure C is pointing to one ____.
a)
chromatid
b)
chromosome
c)
centromere
d)
DNA
47.
A diploid cell is one that
a)
has 2 copies of each chromosome
b)
is designated by 2n
c)
has chromosomes found in pairs
d)
all the rest are correct
48.
The diagram represents a cellular process. What process occurs at Y?
a)
Mitosis I
b)
Meiosis II
c)
Meiosis I
d)
Mitosis II
49.
Compared with mitosis, the process of meiosis results in —
a)
greater number of cell chromosomes
b)
greater volume of cell cytoplasm
c)
greater number of daughter cells
d)
greater amount of genetic material
50.
What phase is shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
51.
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
52.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
53.
What happens to the chromosome number during meiosis?
a)
It doubles
b)
It stays the same
c)
It divides in half
d)
It becomes diploid
54.
During which phase of meiosis is the chromosome number reduced?
a)
anaphase I
b)
metaphase I
c)
telophase I
d)
telophase II
55.
Haploid Cells are represented by
a)
2n
b)
n
c)
1/2 n
d)
4n
56.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
57.
If the Diploid number of Carrots is 18, the haploid number is
a)
18
b)
9
c)
27
d)
36
58.
Goes through P.M.A.T two rounds
a)
Mitosis
b)
Meiosis
c)
Osmosis
d)
Transcription
59.
True or false: Diploid cells contain homologous chromosomes (one from each parent)
a)
True
b)
False
60.
Body cells are also known as
a)
Somatic
b)
Gametes
61.
Sex cells are also known as
a)
Somatic
b)
Gametes
62.
How many PAIRS of chromosomes are found in humans?
a)
46
b)
23
c)
32
d)
24
63.
Sex cells produced in a male organism are called
a)
Sperm
b)
Egg
64.
Sex cells produced in a female are called
a)
Sperm
b)
Egg
65.
True or false:
You get half of your genes from your mother and half from your father
You get half of your genes from your mother and half from your father
a)
True
b)
False
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