多精入卵
duō jīnɡ rù luǎn
- 名polyspermy
多精入卵
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有多精入卵现象,极少数卵子多精受精。
Now and then , there exists the phenomenon that a few sperms penetrate into egg , while polyspermy is few .
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受精过程无论体内或体外,都容易发生多精入卵,体外受精则更甚。
Polyspermy occurred more frequently during in vitro fertilization than in vivo in pig , although it has been reported commonly in both cases .