A micrograph of dividing cells from a rat, a diploid animal, shows a cell where 21 pairs of sister chromatids are being pulled apart.
Which stage of cell division could such a photo have been taken?

a) Anaphase 1 of meiosis
b) Anaphase II of meiosis
c) Anaphase of mitosis O
d) Telophase 1 of meiosis
e) Telophase of mitosis

Explanation:

1. Meiosis is the process of cell division in which one cell is divided into four daughter cell, each contains equal number of chromosome, half the number of chromosomes as compared to parental cell.

2. In meiosis I, DNA duplication occurs but the sister chromatids are not separated, only homologous pair of chromosomes are separated, so this is called reductional division.

3. In meiosis II, chromatids are pulled apart and and are separated into different chromosomes, so it is called equational division. There is no DNA duplication in meiosis II.

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