Biology, 20.04.2020 20:48 fatboicroi

When zebrafish eggs are laid, they are surrounded by a tough chorion. Sperm are unable to get through this chorion and must find the tiny tunnel called a micropyle that provides a channel to the egg cell membrane. This channel is so tiny that only one sperm is able to fit through at a time. The micropyle most likely
Aids in preventing polyspermy.

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When zebrafish eggs are laid, they are surrounded by a tough chorion. Sperm are unable to get throug...