此时每条染色体由一对染色单体构成,这两条联合的染色体称为四分体。
At this point esch chromosome consist of a pair of chromatids and the two associated chromosomes are termed a tetrad.
双线期时,配对的染色单体开始从四分体中分离,此时常可见染色体交叉。
In diplotene the pairs of chromatids begin to separate from the tetrad formed by the association of homologous chromosomes.
双线期时,配对的染色单体开始从四分体中分离,此时常可见染色体交叉。
In diplotene the pairs of chromatids begin to separate from the tetrad formed by the association of homologous chromosomes.
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