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Actual haploidy in terms of DNA comes in...

Actual haploidy in terms of DNA comes in

A

metaphase I

B

anaphase

C

anaphase II

D

cell plate

Text Solution

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The correct Answer is:
To determine when actual haploidy in terms of DNA occurs during cell division, we need to analyze the stages of meiosis and the behavior of chromosomes during these stages. ### Step-by-Step Solution: 1. **Understanding Haploidy**: - Haploidy refers to a cell having a single set of chromosomes. In humans, this means having 23 chromosomes, as opposed to the diploid state which has 46 chromosomes. 2. **Meiosis Overview**: - Meiosis consists of two rounds of cell division: Meiosis I and Meiosis II. - Meiosis I reduces the chromosome number from diploid to haploid, while Meiosis II separates the sister chromatids. 3. **Identifying Stages**: - **Metaphase I**: Homologous chromosomes line up at the equatorial plate, but they are still diploid. - **Anaphase I**: Homologous chromosomes are pulled apart to opposite poles, but the cells are still not haploid as they contain sister chromatids. - **Metaphase II**: Chromosomes line up again, but they are still not separated. - **Anaphase II**: Sister chromatids are pulled apart to opposite poles, resulting in haploid cells. 4. **Conclusion**: - The actual haploidy in terms of DNA occurs during **Anaphase II** of meiosis when the sister chromatids are separated, resulting in cells that contain only one set of chromosomes. ### Final Answer: The actual haploidy in terms of DNA comes in **Anaphase II**. ---
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