A) in the region of the vegetal pole. B) in the region of the animal pole. C) in the region of the gray crescent. D) on the border of the animal and vegetal poles. E) in any region of the egg.
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
A) aids in preventing polyspermy. B) prevents sperm from other species from fusing with the egg. C) evolved from a similar structure found in fruit fly eggs. D) ensures that the head and not the tail of the sperm fuses with the egg. E) is a mechanism to ensure that the zygote is diploid and not haploid.