Meiosis yields haploid

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Meiosis yields haploid

Meiosis reduces the chromosome number so the resulting gametes have a single set of chromosomes (n). This halving is essential because fertilization then restores the usual diploid number (2n) when a sperm and egg unite. In meiosis, a diploid germ cell first divides to separate homologous chromosomes, producing two haploid cells, and then the second division separates sister chromatids, yielding a total of four haploid gametes. This is different from mitosis, which preserves the chromosome number to produce diploid identical daughter cells. Terms like polyploid describe cells with more than two chromosome sets, while aneuploid refers to an abnormal number of chromosomes due to segregation errors—not the normal outcome of meiosis.

Meiosis reduces the chromosome number so the resulting gametes have a single set of chromosomes (n). This halving is essential because fertilization then restores the usual diploid number (2n) when a sperm and egg unite. In meiosis, a diploid germ cell first divides to separate homologous chromosomes, producing two haploid cells, and then the second division separates sister chromatids, yielding a total of four haploid gametes. This is different from mitosis, which preserves the chromosome number to produce diploid identical daughter cells. Terms like polyploid describe cells with more than two chromosome sets, while aneuploid refers to an abnormal number of chromosomes due to segregation errors—not the normal outcome of meiosis.

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