知识贝壳
知识贝壳
所属栏目：英汉双解细胞与分子生物学
In meiosis,the stage in mid-prophase I that is characterized by the con-traction of paired homologous chromosomes.At this point each chromosome consists of apair of chromatids,and the two associatedchromosomes are termed a tetrad.减数分裂中的中前期Ⅰ阶段。该阶段的特征是成对的同源 ......（本文共 268 字 ） [阅读本文] >>