CHAPTER 11.4 MEIOSIS PRACTICE TEST
1. Compare the mitotic and meiotic events in human cells by completing the table below.
Type of Division Event
Mitosis
Meiosis
Type of cells involved
Number of chromosomes in the
parent cell at the beginning
(during interphase)
Number of cell divisions need
to complete the event.
Number of chromosomes in
each cell after completion of
event.
Number of new cells formed
Type of cells formed at the
completion of event.
Overall purpose of the event.
2. What is the difference between a diploid cell and a haploid cell?
3. A human diploid cell is designated as 2n = 46. What does the 2, n, and 46 stand for?
4. Jumper ants have 2 chromosomes (2n=2). Draw and label a jumper ant body cell as it goes
through one mitotic cell division.
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CHAPTER 11.4 MEIOSIS PRACTICE TEST
5. Australian daisies have 4 chromosomes (2n=4). Draw and label an Australian daisy germ cell as
it goes through a complete meiotic cell division.
6. What two events during meiosis are responsible for creating gametes that are uniquely different
from one another?
a.
b.
7. Model independent assortment by drawing the different ways tetrad chromosomes in an
Australian daisy cell (2n=4) can arrange themselves during metaphase I.
8. Show (by drawing) how linked alleles differ from unlinked alleles. Label your drawing.
9. Model crossing over by showing (by drawing) how crossing over can separate linked alleles.
Label your drawing.
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CHAPTER 11.4 MEIOSIS PRACTICE TEST
ANSWERS
1. Compare the mitotic and meiotic events in human cells by completing the table below.
Type of Division Event
Mitosis
Meiosis
Diploid somatic (body) cells
Diploid germ cells
46
46
One
Two
Number of chromosomes in
each cell after completion of
event.
46
23
Number of new cells formed
Two
Four
Type of cells involved
Number of chromosomes in the
parent cell at the beginning
(during interphase)
Number of cell divisions need
to complete the event.
Type of cells formed at the
completion of event.
Overall purpose of the event.
Diploid somatic (body) cells
(All new cells are genetically
identical to each other)
1) To make new cells for
growing the body.
2) To replace old, damaged, or
dead cells.
Haploid gametic (sex) cells
(All new cells are genetically
different from each other)
To make gametes (sex cells) for
sexual reproduction.
2. What is the difference between a diploid cell and a haploid cell?
A diploid cell has two sets of homologous chromosomes. One set originates from the female
parent, and the other set originates from the male parent.
A haploid cell has only one set of genes.
3. A human diploid cell is designated as 2n = 46. What does the 2, n, and 46 stand for?
The number of
The number of chromosome sets:
The total number
(One set from the male parent; homologous pairs (23) of chromosomes
the other set from a female parent.
in the cell
2n = 46
4. Jumper ants have 2 chromosomes (2n=2). Draw and label a jumper ant body cell as it goes
through one mitotic cell division.
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CHAPTER 11.4 MEIOSIS PRACTICE TEST
5. Australian daisies have 4 chromosomes (2n=4). Draw and label an Australian daisy germ cell as
it goes through a complete meiotic cell division.
Anaphase II &
Metaphase II Telophase II
Anaphase I &
Metaphase
I
Telophase I
Interphase
Prophase I
6. What two events during meiosis are responsible for creating gametes that are uniquely different
from one another?
a. Independent assortment: Tetrad arrangement during alignment in metaphase I is random.
Independent assortment in a human germ cell can result in 223 or 8,388,608 unique gametes.
b. Crossing over: Arms of homologous chromosomes cross over and exchange information. This
results in the production of an immeasurable number of unique gametes.
7. Model independent assortment by drawing the different ways tetrad chromosomes in an
Australian daisy cell (2n=4) can arrange themselves during metaphase I.
One way
Another way
8. Show (by drawing) how linked alleles differ from unlinked alleles. Label your drawing.
Alleles on the same chromosome are linked.
Alleles on different chromosomes are not linked.
Examples:
Linked: A and B , a and b
Not linked: A and a, A and b, B and a, B and b
C is not linked to A, B, a, or b.
9. Model crossing over by showing (by drawing) how crossing over can separate linked alleles.
Label your drawing.
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