Biology, 11.01.2020 18:31 lullexxxx

During the process of fertilization, which step happens first? a. the sperm's nucleus enters the egg cell. b. enzymes break down the protective layer of the egg cell membrane. c. a sperm attaches to a binding site on the egg cell membrane. d. the cell membrane of the egg cell changes. e. the sperm looses its tail.

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