postreductional disjunction

'postreductional disjunction' can also refer to...


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Referring to the separation of alleles at particular heterozygous loci during the first meiotic division. If the loci are represented by A and A′, in the case of postreductional disjunction the two chromatics that enter one sister nucleus have one A and one A′ allele, whereas in the case of prereductional disjunction both have A alleles or both A′ alleles.

Subjects: Genetics and Genomics.

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