1. MITOSIS vs. MEIOSIS

2. PARENT CELL PARENT CELL BODY CELL GAMETE PRODUCING CELL
Complete the concept map comparing mitosis and meiosis. Use the following terms, each term can be used one or more times: diploid cell, one cell division, four haploid cells, parent cell, two cell divisions, body cell, same, chromosomes, gamete-producing cell, half, two diploid cells.
PARENT CELL
PARENT CELL
BODY CELL
GAMETE PRODUCING CELL
ONE CELL DIVISION
TWO CELL DIVISIONS
2 DIPLOID CELLS
4 HAPLOID CELLS
SAME
HALF
CHROMOSOMES
CHROMOSOMES
PARENT CELL

3. 2. Define homologous chromosome.
Two chromosomes, one from each parent cell, that are identical in appearance and pair during meiosis
3. Define sister chromatids.
Two identical copies of chromatids formed by the replication of a single chromosome, with both copies joined together by a centromere.
4. Describe 2 parts of meiosis that are similar to mitosis.
All phases of mitosis occur in meiosis 1.

4. 5. Identify whether each process below occurs during mitosis, meiosis, or both.
Sister chromatids separate
b. Haploid cells are formed
c. Cell division occurs once
d. Homologous chromosomes pair
e. haploid cells are the final result
f. Crossing over occurs
g. Cell division occurs twice
h. Replicated chromosomes line
up in the middle of the cell
i. diploid cells are the final result
both
meiosis
mitosis
meiosis
meiosis
meiosis
meiosis
both
mitosis

5. 6. Define crossing over.
What phase does it occur?
7. Does the parent cell in Mitosis start off as diploid or haploid?
Are the resulting cells at the end of Mitosis diploid or haploid?
8. Does the parent cell in Meiosis start off as diploid or haploid?
Are the resulting cells at the end of Meiosis diploid or haploid?
9. How does the number of chromosomes in a sex cell compare with the number of
chromosomes in the parent cell?
The exchange of chromatid segments of homologous chromosomes .
Prophase 1
Diploid
Diploid
Diploid
Haploid
Half the amount
10. Describe the differences in how the chromosomes line up in middle of the cell
during Metaphase I of Meiosis and Metaphase of Mitosis.
Metaphase 1 Meiosis = Chromosomes are pairs.
Metaphase of mitosis = unpaired chromosomes.

6. 11. Identify the phase in the cell to the left.
What is the name of Structure A?
Metaphase 1
Homologous Chromosomes (Tetrad)
12. Identify the phase in the cells to the left.
What is happening to the nuclear envelope?
Why does this happen?
Prophase 2
Disappearing
So DNA can move
13. Identify the phase in the cell to the left.
What is being separated?
Anaphase 1
Homologous Chromosomes (Tetrad)

8. 14. Explain why mitosis is referred to as a process of cell replication.
As the cell goes through the mitosis phases, all structures are copied (REPLICATED)
creating two identical cells.
15. Explain why meiosis is referred to as a process of cell reduction.
As the cell goes through the meiosis phases, the number of chromosomes is
REDUCED to half the original amount.