As to the germ cells genesis, the chromosome behavior, the changes of the isoenzyme activity and protein constitution as well as function during different reproductive states in Cladocera, few reports had been elucidated so far.

• 至于在不同生殖状态下枝角类生殖细胞的发生过程及生殖细胞发生过程中染色体的行为变化,枝角类生殖转化过程中酶的活性和蛋白质的组成和功能变化等均尚未完全弄清。