WorksheetsMeiosis
Total questions: 20
Worksheet time: 10mins
The diploid and haploid number of chromosomes in a gamete is represented by the symbol
z
n
x
y
If an organism’s diploid number is 12, what is the organism's haploid number?
3
6
12
24
During the process shown below, homologous chromosomes exchange genetic material. What is this process called?
Crossing Over
Independent Assortment
Fertilization
Meiosis
If an organism has a haploid number of 20, what is the organism's diploid number?
10
20
40
80
Homologous chromosomes pair up during which phase of meiosis?
Prophase I
Prophase II
Metaphase I
Metaphase II
Crossing Over occurs during which phase of Meiosis?
Prophase I
Prophase II
Metaphase I
Metaphase II
Independent Assortment occurs during which phase of Meiosis?
Prophase I
Prophase II
Metaphase I
Metaphase II
Which of the following statements is true about how the number of chromosomes is reduced between meiosis I and meiosis II?
Crossing-over occurs
Metaphase occurs
DNA replication occurs twice
DNA replication does not occur again
______ is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.
Crossing Over
Independent Assortment
Fertilization
Meiosis
Gametes are produced by the process of
Mitosis
Meiosis
Crossing Over
Replication
Humans possess two alleles, or variations, for each gene. The alleles may be the same, or they may be different.When humans reproduce, their alleles are separated and independently sorted into different gametes, or sex cells. So, when sex cells randomly combine during fertilization to produce offspring, there is
a high probability of producing a clone.
a low probability of survival.
an increase in genetic variation.
a decreased risk of mutation.
Unlike mitosis, meiosis results in the formation of
Diploid cells.
Haploid cells.
2n daughter cells.
Body cells.
Unlike mitosis, meiosis results in the formation of
Two genetically identical cells.
Four genetically different cells.
Four genetically identical cells
Two genetically different cells
If an organism has a diploid number of 30, what would be the haploid number?
5
10
15
30
If an organism has a haploid number of 23, what would be the diploid number?
3
23
46
92
______________ is a source of genetic variation that results from the random alignment of homologous chromosomes during meiosis.
Crossing Over
Independent Assortment
Meiosis
Fertilization
In meiosis I, ________ _________ separates.
Homologous chromosomes
Sister chromatids
Crossing over
Independent Assortment
In meiosis II, ________ _________ separates.
Homologous chromosomes
Sister chromatids
Crossing over
Independent Assortment
Which of the following accurately states the end result of meiosis?
four diploid cells
two diploid cells
four haploid cells
two haploid cells
Which phase of interphase does NOT occur after meiosis I?
G1
G2
S
All of these stages occur
