Question

true or false

1. _____ meiosis ii separates homologous chromosomes, just like meiosis i.
2. _____ by the end of meiosis ii, four haploid cells are produced, each with a unique combination of genetic material.
3. _____ during prophase ii, chromosomes pair up and undergo crossing over, just like in prophase i.
4. _____ in anaphase ii, sister chromatids are pulled apart and move to opposite sides of the cell.
5. _____ telophase ii and cytokinesis result in two diploid cells that are identical to each other.
6. _____ nondisjunction occurs when homologous chromosomes or sister chromatids fail to separate properly during meiosis.

Explanation:

1. Meiosis I separates homologous chromosomes, while Meiosis II separates sister chromatids. So it's false.
2. Meiosis II results in four haploid cells with unique genetic material due to crossing - over in Meiosis I. So it's true.
3. Chromosome pairing and crossing - over occur in Prophase I, not Prophase II. So it's false.
4. In Anaphase II, sister chromatids are pulled apart to opposite sides of the cell. So it's true.
5. Telophase II and cytokinesis result in four haploid cells, not two diploid cells. So it's false.
6. Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during meiosis. So it's true.

Answer:

1. False
2. True
3. False
4. True
5. False
6. True