Multiple Choice
In meiosis, how many sequential cell divisions occur to produce haploid cells from a diploid precursor?
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9. Mitosis and Meiosis
Meiosis
Multiple Choice
During meiosis, how many nuclear divisions occur to produce haploid cells from a diploid precursor?
A
Three nuclear divisions
B
Two nuclear divisions (meiosis I and meiosis II)
C
One nuclear division (meiosis I only)
D
Four nuclear divisions
Verified step by step guidance1
Understand that meiosis is a special type of cell division that reduces the chromosome number by half, producing haploid cells from a diploid precursor.
Recall that meiosis consists of two main stages: meiosis I and meiosis II, each involving one nuclear division.
In meiosis I, homologous chromosomes separate, 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 separate, similar to mitosis, resulting in four haploid cells with single chromatids.
Therefore, the total number of nuclear divisions during meiosis is two: one in meiosis I and one in meiosis II.
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