Question

Name: Mitosis vs. Melosis Period Date: QUESTION 1 concept map comparing mitosis and meiosis. Use the following te rms, each term can be diploid cell, one cell division, four haploid cells, parent ce cell divisions, body cell, same, chromosomes & cell, half, two diploid cells, forms haploid cell Use used one or more times: ll, two 2. Define homokgous chromosome 3. Define sister chromatids 4. Describe 2 parts of meiosis that are similar to mitosis. a. b. 5. Identify whether each process below occurs during mitosis, meiosis, or both number of a. Sister chromatids separate b. Haploid cells are formed c. Cell division occurs once d. Homologous chromosomes pair e. 4 haploid cells are the final result f. Crossing over occuns g Cell division occurs twice h. Replicated chromosomes line up in the middle of the cell Í 2 diploid cells are the final result original cel Parent CelI 6. Define crossing over What phase does it occur? the end of Mitosis diploid or haploid? the end of Meiosis diploid or haploid? Are the resulting cells at 7. Does the parent cell in Mitosis start off as diploid or haploid? 8. Does the parent cell in Meiosis start off as diploid or haploid? 9. How does the number of chromosomes in a sex cell compare with the number of chromosomes in the parent cel? Are the resulting cells at that unde 4. Describe 2 parts of meiosis that are similar to mitosis. 3. a. form b. havin 5. Identify whether each process below occurs during milosis, meiosis, or both. a. Sister chromatids separate b. Haploid cells are formed c. Cell division occurs once origi Homologous chromosomes pair e. 4 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. 2 diploid cells are the final result Par 6. Define crossing over. 7. Does the parent cell in Mitosis start off as diploid or haploid? 8. Does the parent cell in Meiosis start off as diploid or haploid? 9. How does the number of chromosomes in a sex cell compare with the number What phase does it occur? the end of Mitosis diploid or haploid? the end of Meiosis diploid or haploid?

Answer 1

1. Mitosis occurs in a body cell which is a diploid cell that undergoes one cell division forming two diploid cells having the same number of chromosomes as the parent cell.

Meiosis occurs in a gamete-producing cell which is a diploid cell that undergoes two cell divisions forming four haploid cells having half the number of chromosomes as the parent cell.

2. Homologous chromosome: Homologous chromosomes are chromosome pairs (one from each parent) that are similar in length, gene sequence, and centromere location. Homologous chromosomes have the same genes at the same loci but the genes may contain different alleles. Homologous chromosomes are seen in meiosis cell division.

3. Sister chromatids: A sister chromatid is either one of the two chromatids of the same chromosome joined together by a common centromere. This can be seen in both mitosis and meiosis cell division.

4. Similarities between mitosis and meiosis cell division:

1. Both types of cell division give rise to more than one daughter cell.
2. Both types of cell division follow duplication of chromosomal DNA.

1. Sister chromatids separate: Mitosis and Meiosis II
2. Haploid cells are formed: Meiosis
3. Cell division occurs once: Mitosis
4. Homologous chromosome pairs: Meiosis
5. 4 haploid cells are the final result: Meiosis
6. Crossing over occurs: Meiosis
7. Cell division occurs twice: Meiosis
8. Replicated chromosome lined up in the middle of the cell: Mitosis and Meiosis
1. 2 diploid cells are the final result: Mitosis

6. Crossing over: Crossing over is the exchange of genetic material between non-sister chromatids of homologous chromosomes during meiosis, which results in new allelic combinations in the daughter cells.

Crossing over takes place during pachytene sub-stage of Prophase I of meiotic division (meiosis I).

7. Parent cell in Mitosis start of as diploid and ends off as diploid.

8. Parent cell in Mitosis start of as diploid and ends off as haploid.

9. The number of chromosome in a sex cell is half (n) compared to the number of chromosome in the parent cell (2n).

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