which of the following is a difference between phase 1 and phase 2 of meiosis?

Question

anaphase, metaphase, and telophase only occurs during phase 1 of miosis.
phase 1 results in daughter cells with 23 chromosomes each and phase 2 with 46 chromosomes each.
phase 1 results in two haploid daughter cells and phase 2 results in four haploid daughter cells.
genetic variations can only occur during phase 2 of meiosis.

Answer 1

The correct difference between phase 1 and phase 2 of meiosis is:

Phase 1 results in two haploid daughter cells and phase 2 results in four haploid daughter cells.

Explanation:

• Meiosis I (Phase 1) involves the separation of homologous chromosomes and results in two haploid daughter cells (each with half the original chromosome number).
• Meiosis II (Phase 2) resembles mitosis and involves the separation of sister chromatids, resulting in a total of four haploid daughter cells by the end of meiosis.

The other statements are incorrect for the following reasons:

1. Anaphase, metaphase, and telophase occur in both meiosis I and meiosis II.
2. Both phases involve haploid cells; meiosis I results in two haploid cells (23 chromosomes each in humans), while meiosis II divides those further but does not change the number of chromosomes in each cell (i.e., still 23 chromosomes each).
3. Genetic variation can occur during meiosis I (through crossing-over and independent assortment), as well as during meiosis II (though it is more about the distribution of already varied alleles).