Bivalent (genetics)

（重定向自Bivalent chromosome）

A bivalent, sometimes referred to as a tetrad, is the association of a pair of homologous chromosomes physically held together by at least one DNA crossover. This physical attachment allows for alignment and segregation of the homologous chromosomes in the first meiotic division.

单词	Bivalent chromosome
释义	Bivalent chromosome 原声例句日常生活医学科普 The paired chromosomes are called bivalent or tetrad chromosomes. 成对的染色体称为二价体（也称为四分体）。英语百科 Bivalent (genetics) （重定向自Bivalent chromosome） A bivalent, sometimes referred to as a tetrad, is the association of a pair of homologous chromosomes physically held together by at least one DNA crossover. This physical attachment allows for alignment and segregation of the homologous chromosomes in the first meiotic division.
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