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The Stages of Meiosis

Genetic recombination happens at the start of meiosis, making each chromatid different.Meiosis I is a reduction division that separates the pairs of homologous chromosomes into two different cells.
Each cell will be haploid.Meiosis II is similar to mitosis. The chromatids separate and are pulled to opposite poles.This forms four genetically different haploid daughter cells.

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Specification: OCR Biology A (H020), AS-level, 2.1.6 Cell division, cell diversity and cellular organisation. Topic: Cell Division.

Key terms in this lesson

mitosis
Nuclear division producing two daughter nuclei that are genetically identical to the parent nucleus, used in growth, repair and asexual reproduction.
meiosis
Nuclear division that halves the chromosome number, producing four genetically different haploid daughter cells for use as gametes.
chromatid
One of two identical copies of a chromosome, joined by a centromere, formed after DNA replication.
homologous chromosomes
A pair of chromosomes, one from each parent, that carry the same genes at the same loci but may carry different alleles.
haploid
Having a single complete set of chromosomes, as found in gametes.

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