Mitosis vs Meiosis Worksheet Complete Solution
1. Complete the concept map comparing mitosis and meiosis. Use the following terms, each term can be
... [Show More] 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.
2. Define homologous chromosome.- A pair of chromosomes where 1 is each parents (1 from mom, 1 from dad)
3. Define sister chromatids.- these are replicated chromosomes attached in the middle by a centromere
4. Describe 2 parts of meiosis that are similar to mitosis.
a. PMAT, prophase, metaphase, anaphase, telophase ( 1 cycle in mitosis and 2 cycles in meiosis)
b. Cytokinesis
5. Identify whether each process below occurs during mitosis, meiosis, or both.
a. Sister chromatids separate both
b. Haploid cells are formed meiosis
c. Cell division occurs once mitosis
d. Homologous chromosomes pair meiosis
e. 4 haploid cells are the final result meiosis
f. Crossing over occurs meiosis
g. Cell division occurs twice meiosis
h. Replicated chromosomes line up in the middle of the cell both
i. 2 diploid cells are the final result mitosis
6. Define crossing over. In meiosis, homologous chromosomes start crossing over, or swapping genes, during the first stage of cell division. This crossing over effect is what makes every single person so unique
What phase does it occur? Prophase 1
7. Does the parent cell in Mitosis start off as diploid or haploid? Diploid Are the resulting cells at the end of Mitosis diploid or haploid? Diploid
8. Does the parent cell in Meiosis start off as diploid or haploid? Diploid Are the resulting cells at the end of Meiosis diploid or haploid? Haploid
9. How does the number of chromosomes in a sex cell compare with the number of chromosomes in the parent cell? In a sex cell, there are 46 chromosomes. In a parent cell there is 23 chromosomes. They are halves (haploids)
10. Describe the differences in how the chromosomes line up in middle of the cell during Metaphase I of Meiosis and Metaphase of Mitosis. In Metaphase of Mitosis, the chromosomes line up in the middle of the cell. In Metaphase 1 of Meiosis, homologous chromosomes line up in the middle.
11. Identify the phase in the cell to the left. Metaphase 1 What is the name of Structure A? a chromosome pair
12. Identify the phase in the cells to the left. Prophase 2 What is happening to the nuclear envelope? Slowly dissolving or separating
Why does this happen? To allow the DNA to be moved by the centrioles
13. Identify the phase in the cell to the left. Anaphase 1 What is being separated? The chromosome pairs
14. Explain why mitosis is referred to as a process of cell replication. Mitosis is referred to as a process of cell replication because the cells in the end, the 2 diploid cells are identical—they are replicated. In the end, they contain 46 chromosomes—the same in which they started with.
15. Explain why meiosis is referred to as a process of cell reduction. Meiosis is referred to as a process of cell reduction because in the end, the 4 haploid cells are not identical and contain 23 chromosomes, half of the starting amount. [Show Less]