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WorksheetsMitosis, Meiosis and Mutations
Total questions: 26
Worksheet time: 16mins
Name
Class
Date
1.
In meiosis, the haploid number of chromosomes in a human sex cell is:
a)
46
b)
92
c)
22
d)
23
2.
What is the diploid number of cells found in a human body cell?
a)
23
b)
46
c)
92
d)
47
3.
After meiosis is complete, the new cells:
a)
are all identical
b)
are all different
c)
are half identical and half different
d)
are all stretched out
4.
Why is sexual reproduction better than asexual reproduction?
a)
It gives an advantage to organisms to be different than the rest, if the environment changes.
b)
It is better for all organisms to be the same.
c)
It happens faster.
d)
It helps skin cells divide faster to heal wounds.
5.
The process on the left is:
The process on the right is:
The process on the right is:
a)
Left: meiosis
Right: meiosis
Right: meiosis
b)
Left: meiosis
Right: cloning
Right: cloning
c)
Left: mitosis
Right: meiosis
Right: meiosis
d)
Left: mitosis
Right: mitosis
Right: mitosis
6.
Mitosis is considered this type of reproduction
a)
sexual
b)
asexual
7.
This produces cells for growth and repair.
a)
mitosis
b)
meiosis
8.
Before a cell can divide, what must happen?
a)
Nothing, it is always ready to divide
b)
The number of chromosomes must be cut in half
c)
The number of chromosomes must double
d)
The number of chromosomes must triple.
9.
What phase of mitosis do the chromosomes line up in the middle of the cell?
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Telophase
10.
The phase in mitosis where chromosomes move away and are pulled apart by spindles to opposite sides of the cell.
a)
prophase
b)
anaphase
c)
metaphase
d)
telephase
11.
In mitosis, the two resulting cells are
a)
different from the starting cell and identical to each other.
b)
different from the starting cell and different from each other.
c)
identical to the starting cell and different from each other.
d)
identical to the starting cell and identical to each other.
12.
Another name for a sex cell is a:
a)
gamete
b)
embryo
c)
bone cell
d)
muscle cell
13.
Meiosis results in cells with
a)
half the number of chromosomes as the parent cell
b)
double the number of chromosomes as the parent cell
c)
identical number of chromosomes as the parent cell
d)
triple the number of chromosomes as the parent cell
14.
What is the result of meiosis?
a)
4 genetically different cells
b)
4 genetically identical cells
c)
2 genetically identical cells
d)
2 genetically different cells
15.
What is the result of mitosis?
a)
4 genetically different cells
b)
4 genetically identical cells
c)
2 genetically identical cells
d)
2 genetically different cells
16.
During which phase does DNA replicate?
a)
anaphase
b)
metaphase
c)
prophase
d)
interphase
17.
If an organism has a diploid (2n) number of 6, what is its haploid (n) number?
a)
2
b)
3
c)
6
d)
12
18.
If a cell has a haploid (n) number of 10, what is the diploid (2n) number?
a)
5
b)
10
c)
20
d)
25
19.
If a somatic cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
20.
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
21.
Organisms with 18 chromosomes in the sex cells will have this many chromosomes in their body cells
a)
9
b)
18
c)
36
d)
64
22.
Organisms with 34 chromosomes in their body cells will have this many chromosomes in their sex cells
a)
34
b)
68
c)
124
d)
17
23.
What causes mutations?
a)
Mistakes in replication or environmental substances
b)
The amino acids
c)
Passed down by genetics
d)
It's how your born
24.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.
a)
Substitution
b)
Deletion
c)
Addition
d)
Inversion
25.
If a mutation occurs in an expressed gene, it will most directly affect the structure of a cell's
a)
ATP
b)
proteins
c)
energy source
d)
membrane
26.
DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.
a)
Substitution
b)
Insertion
c)
Inversion
d)
Translocation
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