MEIOSIS REVIEW
ANSWERS
MINITEST TOMORROW
QUESTION # 1
• Match the following.
•
•
•
•
•
•
•
•
F Individual chromosomes line up at the equator
A Homologous chromosomes pair up; crossing-over
occurs
G Centromere splits; sister chromatids move to
opposite poles
E Chromosomes condense; spindle fibers form
D Cell divides forming 2 daughter cells
B Homologous chromosome pairs line up at the
equator
C One chromosome from each pair moves to each
pole
H Cell divides forming 4 haploid daughter cells
QUESTION #2
• What (specifically) is being made
during meiosis?
• Gametes
• Sperm
• Eggs
QUESTION #3
• How many times does the cell
divide during meiosis?
• Two times
QUESTION #4
• If an organism has 16
chromosomes in one of its body
cells, how many chromosomes
would its sex cells have?
•8
QUESTION #5
• What is crossing over? Draw an
example to show crossing-over.
• When pieces of chromosomes cross
over each other, resulting in a new
combination of genes
QUESTION #6
• When does crossing-over occur
during Meiosis?
• Prophase I
QUESTION #7
• Gametes are haploid/diploid.
QUESTION #8
• What does haploid mean?
• One of each chromosome
QUESTION #9
• What does diploid mean?
• Two of each chromosome
QUESTION #10
• What is a tetrad and when does it
form?
• A tetrad is four sister chromatids sideby-side
• It forms during prophase I
QUESTION #11
• How many sperm are produced
per parent cell during meiosis?
• Four
QUESTION #12
• How many eggs are produced
per parent cell during meiosis?
• One
• Why is this different from the
number of sperm produced?
• The cells divide unevenly
QUESTION #13
• Why does the chromosome
number need to be cut in half
during meiosis?
• So that when the sperm and egg
combine, the zygote will have the
correct number of chromosomes
QUESTION # 14
Mitosis
Meiosis
Type of Cell
Regular body
cells
Sex cells only
# of divisions
1
2
# of
daughter
cells
2
4
diploid/
haploid
Diploid
(identical to
parent)
Haploid
(different from
parent)
purpose
Growth &
repair
reproduction
QUESTION #15
• Know the Comparing Mitosis and
Meiosis worksheet information.