SYNAPSIS

Synapsis

Synapsis is the pairing of two homologous chromosomes that occurs during meiosis. This is not to be confused with mitosis. Mitosis also has prophase, but does not ordinarily do pairing of two homologous chromosomes. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis. When homologous chromosomes synapse, their ends are first attached to the nuclear envelope. These end-membrane complexes then migrate, assisted by the extranuclear cytoskeleton, until matching ends have been paired. Then the intervening regions of the chromosome are brought together, ...

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synapsis

Noun

  1. The association of homologous maternal and paternal chromosomes during the initial part of meiosis.


The above text is a snippet from Wiktionary: synapsis
and as such is available under the Creative Commons Attribution/Share-Alike License.

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