what is the role of primary egg envelopes in fertilisation?
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primary egg is the starting of fertilisation.
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The role of primary egg envelopes in fertilization is that It provides sperm receptors that are generally species specific and helps prevent polyspermy; it protects the developing embryo yet yields at the time of hatching.
In most vertebrate eggs (including some mammals), a jelly or albumen coat is added to the vitelline envelope.
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