Bivalent

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Definition

noun, plural: bivalents

(genetics) A pair of homologous chromosomes in synapsis during meiosis.

adjective

(chemistry) Of, or having a valence of two; divalent.

(genetics) Of, or pertaining to the bivalent structure or the association of the two homologous chromosomes during meiosis.


Supplement

In genetics, a bivalent refers to the two homologous chromosomes that have already joined or paired together in synapsis at Prophase I of Meiosis I.

Word origin: bi- (two) + valent from valence
Related forms: bivalence (noun)

Compare: univalent, polyvalent

See also: valence

Related terms: