例句 /

A species can be characterized by its karyotype since the number, size, and shape of chromosomes vary greatly between species but are fairly constant within species.

A species can be characterized by its karyotype since the number, size, and shape of chromosomes vary greatly between species but are fairly constant within species.

由于不同物种的染色体数目、大小和形状有很大区别并且具有稳定性,因此核型可以为某一物种的特征。