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Contraction of the dartos muscle
Zona Pellucida
A thick, transparent coating surrounding the ovum of mammals, playing a crucial role in fertilization.
Acrosome
A cap-like structure over the anterior part of a sperm's head, containing enzymes that help the sperm penetrate the egg.
Sperm
Male reproductive cells designed for fertilization of the female ovum, contributing half of the genetic information to the offspring.
Egg
A reproductive cell produced by female organisms, capable of developing into a new individual upon fertilization.
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