For sexually reproducing diploid parent cells, which of the following statements best explains the production of haploid cells that occurs in meiosis but not in mitosis?Separation of chromatids occurs once, and there is one round of cell division in meiosis.ASeparation of chromatids occurs twice, and there are two rounds of cell division in mitosis.BSeparation of chromatids occurs once, and there are two rounds of cell division in meiosis.CSeparation of chromatids occurs twice, and there is one round of cell division in mitosis.

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21-04-2020
Biology

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For sexually reproducing diploid parent cells, which of the following statements best explains the production of haploid cells that occurs in meiosis but not in mitosis?Separation of chromatids occurs once, and there is one round of cell division in meiosis.ASeparation of chromatids occurs twice, and there are two rounds of cell division in mitosis.BSeparation of chromatids occurs once, and there are two rounds of cell division in meiosis.CSeparation of chromatids occurs twice, and there is one round of cell division in mitosis.

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eyitbay eyitbay · Answer 1 · 2020-04-24T03:12:47+02:00

Answer:

.B Separation of chromatids occurs once, and there are two rounds of cell division in meiosis.

Explanation:

At Anaphase II of second meiotic division, separation of chromatids occurs, with the spindles microtubules pulling the chromatids to opposite poles.

The significance of chromatid separation at anaphase II of meiosis II, is the formation of haploid cells(n) which occupies the gametes of the parents.

Prior to this at anaphase I, the homologous chromosomes get separated and move to anaphase II to under go centromere separation as described above.

This is a complete difference to mitosis which consist of one cycle, with the separation of chromosomes and not chromatids at single anaphase cycle.

Nyctalus Nyctalus · Answer 2 · 2021-12-14T10:51:23+01:00

Answer: (B) Separation of chromatids occurs once, and there are two rounds of cell division in meiosis.

Explanation: There are various stages in meiosis-

1- Prophase

2-Metaphase

3- Anaphase

4- Telophase

5- Cytokinesis.

At Anaphase II of meiosis II (second meiotic division) , separation of chromatids occurs and forms haploid cells(n) having parental gametes.

During meiosis, diploid cells undergo DNA replication, followed by two rounds of cell division, producing four haploid sex cells.

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