Name: _________________________________________________________________ Hr: ____________
CELL DIVISION
PRACTICE PACKET
Section 1: Vocabulary Matching
Terms
Definitions
A. Non-sex cells such as hair, skin, and muscle cells.
________ 1. Nucleotide
________ 2. DNA
________ 3. Cell Cycle
B. Monomer of nucleic acids, composed of a phosphate—pentose
sugar—and nitrogenous base.
C. 2n or a full set of genetic information.
________ 4. Interphase
D. The longest phase in the cell cycle, composed of a G1 Phase, S Phase,
and G2 Phase.
________ 5. M Phase
E. Variations of a gene (typically dominant or recessive).
________ 6. Mitosis
F. Gamete cell division.
________ 7. Meiosis
G. Tightly coiled DNA.
________ 8. Somatic Cell
H. Identical copies of chromosomes, which contain the exact same genes
and alleles.
________ 9. Gamete Cell
________ 10. Chromosome
________ 11. Sister Chromatids
________ 12. Homologous Pairs
________ 13. Alleles
________ 14. Genes
________ 15. Haploid
________ 16. Diploid
I. A type of nucleic acid, stored in the nucleus of eukaryotic cells,
which contains the genetic information needed to produce proteins.
J. A tetrad of chromosomes which have the same genes but different
alleles.
K. The shorter phase in the cell cycle, during which cells divide either
through mitosis or meiosis.
L. Sex-cells such as sperm and eggs.
M. A specific sequence of DNA which always comes in at least two
variations.
N. The process by which cells increase in size, replicate DNA, and
engage in cell division.
O. 1n or half the genetic information.
P. Somatic cell division.
Section 2: More Vocabulary Matching
Terms
________ 1. Prophase of Mitosis
________ 2. Metaphase of Mitosis
________ 3. Anaphase of Mitosis
________ 4. Telophase of Mitosis
Definitions
A. Pairs of sister chromatids line up at the metaphase plate,
along each other’s centromeres, preparing for somatic cell
division.
B. Chromosomes unwind, and the nucleus reforms within the 2
final somatic daughter cells.
C. Pairs of sister chromatids separate independent of one
another, and so that each new cell receives only 1 allele for
every gene (or a haploid set).
________ 5. Cytokinesis
________ 6. Prophase-1 of Meiosis
________ 7. Metaphase-1 of Meiosis
________ 8. Anaphase-1 of Meiosis
________ 9. Telophase-1 of Meiosis
D. Cytoplasm is split, and the cell membrane (or cell wall) is
reformed and closed around each daughter cell.
E. The nucleus dissolves, DNA condenses into chromosomes,
centrioles and spindles prepare for gamete cell division.
F. The nucleus dissolves, DNA condenses into chromosomes,
centrioles and spindles prepare for somatic cell division.
________ 10. Prophase-2 of Meiosis
G. Homologous pairs of chromosomes line up across the
metaphase plate, and crossing over occurs.
________ 11. Metaphase-2 of Meiosis
H. Homologous pairs of chromosomes separate.
________ 12. Anaphase-2 of Meiosis
I. Pairs of sister chromatids line up at the metaphase plate,
along each other’s centromeres, prepare for gamete cell
division.
________ 13. Telophase-2 of Meiosis
________ 14. Crossing Over
________ 15. Law of Segregation
________ 16. Law of Independent
Assortment
J. During Anaphase-2 of Meiosis chromosomes separate
without any regard to other alleles or chromosomes,
increasing variation amongst sperm/eggs.
K. Only the centrioles and spindles prepare for a second
division.
L. Chromosomes unwind, and the nucleus reforms within the 4
final daughter cells.
M. An event which occurs during Metaphase-1 of Meiosis,
during which alleles are exchanged between adjacent
chromosomes of a homologous pair (increasing variation
and diversity).
N. Pairs of sister chromatids separate, so that each new cell
receives 2 alleles for every gene (or a diploid set).
O. During Anaphase-2 of Meiosis chromosomes separate so
that each new cell receives only 1 allele for each gene (or
half the genetic information).
P. Homologous pairs of chromosomes continue to separate.
Section 3: The Cell Cycle
DIRECTIONS  Use the below diagram to answer the following questions!
1) Write on the actual diagram above AND label each number with its correct phase-name.
2) During #_________ the cell first increases in size and prepares for DNA replication.
3) During #_________ the cell continues to increase in size.
4) After #_________ the cell is checked to make sure that enzymes are ready for DNA replication.
5) During #_________ DNA is copied and the cell goes from 2n  4n.
6) During #_________ the cell prepares for cell division by dissolving the nucleus, condensing DNA
into chromosomes, and preparing the centrioles and spindles.
7) During #_________ the cytoplasm is pinched off between the two daughter cells, and the cell
membrane is closed between them.
8) After #_________ the cell is checked to make sure that DNA was replicated correctly.
9) During #_________ chromosomes separate.
10) During #_________ chromosomes line up at the metaphase plate.
11) During #_________ chromosomes continue to separate, unwind, and the nucleus reforms.
12) During #_________ and #________ and #________ the cell grows and prepares for cell division.
13) During #________ through #________ the cell divides.
Section 5: Identifying Cell Division Pictures
DIRECTIONS  Identify the Phases or Structures pictured below.
1)
What are these? ___________________________________
2)
What are these? _____________________________________
3)
What is this? ____________________________
4) Label each picture with its appropriate Meiosis Phase Name.
*THEY ARE NOT IN A CERTAIN ORDER!
5) Where in the above diagram would “crossing over” occur? _____________________
6) Which above picture shows diploid daughter cells? _________________________
7) Which above picture shows haploid daughter cells? _________________________
8) Which above picture shows homologous pairs lined up? _________________
9) Where in the above diagram would chromosomes “assort independently”? ________
10) Which above picture shows sister chromatids lined up? _________________
11) Label each picture with its appropriate Mitosis Phase Name.
Prometaphase
12) Which picture shows sister chromatids lined up at the metaphase plate? _________
13) Which picture shows the development of 2 diploid daughter cells? ______________
14) In which picture would the spindles prepare? _______________________________
15) Which picture shows the parent cell directly AFTER interphase? ______________
Section 6: Crossing Over
DIRECTIONS  Use the below diagram of crossing over, to answer the following questions!
PICTURE #3
PICTURE #4
PICTURE #1
PICTURE #2
PICTURE #5
1) What is the difference between Picture #1 and Picture #2?
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2) What do you call the chromosome pairs in Picture #2? ______________________________________
3) What is happening in Picture #3? _______________________________________________________
4) How is Picture #4 different from Picture #2?
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5) Picture #5 obviously shows 4 chromosomes, but what else could the 4 things represent?
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6) Explain how crossing over increased the variation and diversity amongst the “future” sperm or
eggs in the above picture.
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