객관식
In humans, what is the female reproductive cell (female gamete) called?
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17. Meiosis and Sexual Reproduction
Meiosis
객관식
In meiosis, how many rounds of cell division occur (meiosis I and meiosis II) to produce haploid cells from a diploid cell?
A
One cell division
B
Three cell divisions
C
Four cell divisions
D
Two cell divisions
검증된 단계별 안내1
Understand that meiosis is a special type of cell division that reduces the chromosome number by half, producing haploid cells from a diploid cell.
Recall that meiosis consists of two distinct rounds of cell division: meiosis I and meiosis II.
In meiosis I, homologous chromosomes are separated, reducing the chromosome number from diploid (2n) to haploid (n), but each chromosome still consists of two sister chromatids.
In meiosis II, the sister chromatids are separated, similar to mitosis, resulting in four haploid cells from the original diploid cell.
Therefore, the total number of cell divisions in meiosis to produce haploid cells from a diploid cell is two: meiosis I and meiosis II.
