Sister chromatids of paternal chromosome Sister chromatids of maternal chromosome Table 2: Differences between Mitosis and Meiosis Characteristics Mitosis Meiosis Number of divisions (1 or 2) 2 diploid cells 4 haploid cells Number of daughter cells produced 2 daughter cells 4 daughter cells Are daughter cells genetically identical or genetically different? Number of chromosomes in the daughter cell (as compared to the parental cell) Same or different? If, different explain how. This cell division process is used for:
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Number of divisions: - In mitosis, there is only 1 division. - In meiosis, there are 2 divisions. Show more…
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Are the sister chromatids of a chromosome necessarily identical at the beginning of metaphase I of meiosis? Yes, sister chromatids are always identical structures. No, sister chromatids belong to different chromosomes and may be different from each other. No, crossing over could generate differences. Maybe, it varies from cell division to cell division.
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Q1: If we have 2 sister chromatids, how many chromosomes do we have? If we have 8 sister chromatids, how many (replicated) chromosomes do we have? If we have 92 sister chromatids, how many chromosomes do we have? Q1b: When human cells (2n=46) undergo mitosis, how many sister chromosomes do we have during anaphase? How many replicated chromosomes? Q1c: Crossing over occurs during prophase I phase of meiosis. The point at which the two non-sister chromatids meet is called a chiasma. Resolution of the chiasma results in exchange of genetic material between non-sister chromatids of homologous chromosomes.
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Sister chromatids are lined up in the center of the cell during metaphase of mitosis and during prophase 1 of meiosis is when the homologous chromosomes are held together by synaptonemal complex.
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