Page 1 of 3
Name:
Period:
Meiosis Review Worksheet
Date:
Terms to Know
Asexual reproduction
Centromere
Chromosomes
Daughter
(cells,
chromosomes, etc.)
Gentic
Interphase
Meiosis
Recombination
Somatic cells
Tetrad
Asters (aster fibers)
Chiasmata
Clone
Cell cycle
Chromatid (sister)
Crossing over
Cell plate
Chromatin
Cytokinesis
Diploid (2n)
Fertilization
Gamete
Haploid (n)
Karyotype
Mitosis
Reduction division
Spermatocyte
Zygote
Homologous
Kinetochore
Oocyte (oöcyte)
S phase
Spindle (spindle fibers)
Homologs
Locus
Polar Bodies
Sexual reproduction
Synapsis
Stuff to Know
Know each of the following 10 stages of meiosis, their correct order and the processes that occur during each (note:
these are not in correct order):
anaphase 1
anaphase 2
telophase 1
telophase 2
interphase 1
interphase 2
Know when DNA replicates.
Know what daughter cells are.
Know when chromosomes become visible.
Know when formation of new cell wall or cell membrane occurs.
Know when nuclear membrane disappears.
Know when chromosomes line up in the middle of the cell.
Know when the chromosomes pull apart.
Know the number of meiotic divisions and number of chromosomes in each.
Be able to correctly label/identify drawings of meiosis.
Be able to correctly label/identify drawings of spermatogenesis and oögenesis.
Understand uneven cytoplasm division.
Know why and when crossing over occurs in chromosomes.
Know the difference between haploid and diploid.
prophase 1
prophase 2
metaphase 1
metaphase 2
Page 2 of 3
Name:
Period:
Meiosis Review Worksheet
Date:
1.What is the difference between a haploid and diploid cell?
2.For each of the following state if the cell is haploid or diploid.
Sperm cell =
Liver cell =
Egg cell =
Stomach cell =
3.If the diploid number in a liver cell is 52, how many chromosomes are there in the egg of this organism?
4.The combination of a human
5.During meiosis, the chromosome number:
a) is doubled
and an
b) is reduced c) remains the same produces a zygote with 46 chromosomes.
d) becomes diploid
6.Meiosis produces haploid reproductive cells called
.
7.Name the two human gametes & state their chromosome number.
8.How many times do cells divide during meiosis?
9.What are the stages of meiosis? List them in order.
10.What is a tetrad?
11.Which of the following best describe the term “crossing over”?
a.An exchange of information between two homologous chromosomes
b.A molecular interaction between two sister chromatids
c.A molecular interaction between two non-sister chromatids
d.A separation of two sister chromatids
12.What type of material is exchanged during crossing-over?
13.Crossing-over occurs in which stage of meiosis?
a.Prophase I
b.Prophase II
c.Anaphase I
d.Anaphase II
14.How many cells are formed at the end of Meiosis I & how many copies of chromosomes does each cell have?
15.Is DNA copied before Meiosis II?  Yes
 No
16.How many cells have form at the end of Meiosis II and how many chromosomes do they contain?
Page 3 of 3
Name:
Period:
Meiosis Review Worksheet
Chromosome
#
Organism
Chromosome
#
Date:
Organism
78 Chickens
24 Rice
8 Fruit Fly
14 Pea
40 Beaver
48 Potato
36 Earthworm
216 Field Horsetail (plant)
Use the above chart to help you answer the following questions
17.How many chromosomes does the egg you eat have?
18.How many chromosomes are in potato pollen?
19.How many chromosomes are in a beaver’s tail?
20.A fruit fly short generation time (about 10 days at room temperature) combined with it’s chromosomal number
makes it a favorite of geneticist to study. What is a fruit fly’s diploid chromosomal number?
21.How many chromosomes are in rice’s somatic cells?
22.Which organism has 24 chromosomes in it’s gametes?
somatic cells Circle correct terms
23.A sperm cell is a (gamete, zygote), and is (haploid, diploid).
24.When a sperm cell and an ovum merge, they undergo the process of fertilization, and give rise to a (gamete,
zygote), which is (haploid, diploid).
A hypothetical organism has 10 chromosomes for each of its body cells. Cells are continuously being
rubbed off and replaced.
25.How many chromosomes will be contained in each new skin cell that is replaced?
26.This replacement occurs through the process of
.
27.The diploid number (2N) for this organism is
28.This organism would have how many homologous pairs of chromosomes?
29.The mature eggs of this female would contain how many chromosomes?
Page 4 of 3
Meiosis Review Worksheet
Name:
Period:
Comparison Chart
Meiosis
Definition
Function
Type of Reproduction
Occurs in
Genetically
Crossing Over
Pairing of Homologs
Number of Divisions
Number of Daughter
Cells produced
Chromosome Number
Steps
Karyokinesis
Cytokinesis
Centromeres Split
Creates
Mitosis
Date:
Use this Venn diagram to compare Mitosis and Meiosis.
Page 5 of 3
Meiosis Review Worksheet
Name:
Period:
Date:
Page 6 of 3
Name:
Period:
Meiosis Review Worksheet
Date:
Meiosis Crossword
(Stratton 2010)
Word Bank
chiasmata
chromatid
crossover
daughter cells
diploid
fertilization
gamete
chromosome
tetrad
genetic variation
haploid
homologous
chromosomes
interphase
meiosis
oogenesis
spermatogenesis
ovum
somatic cells
sperm
synapsis
teleophase
zygote
Across
Clues
5. production of eggs
6. a complete pair of chromosomes 2n
8. a fertilized egg
11. phase in which cytokinesis occurs
12. the results of cellular division
14. female gamete
15. the pairing of two homologous
chromosomes during which crossovers can happen
18. basic body cell not sexual
21. chromosomes for the same traits
Down
1. longest phase in meiosis
2. n the state of one half the
chromosome number
3. sister chromatids
4. combining of egg and sperm
7. production of sperm
9. changes in chromosomes resulting
from crossing over
10. two homologous pairs of
chromosomes
13. crossing over of chromosomes
16. sexual reproduction
17. male gamete
19. when two chromosomes exchange
information during synapsis
20. an egg or sperm
22. contains genetic material