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questions :Fertilizetion by discred
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[Visitor (112.0.*.*)]answers [Chinese ]Time :2019-12-16
6 to 7 days after fertilization, the hyaline blastocyst disappears and is gradually buried and covered with endometrium. Need to go through three processes: 1. positioning; 2. adhesion; 3. penetration. Metamorphosis occurred quickly after implantation.

Animal sperm does not have obvious chemotaxis like lower plants, such as bryophytes, but instead reaches the egg by its own active movement or by the cilia of the reproductive tract epithelium. Human fertilization time: within 24 hours after ovulation. Place of fertilization: ampulla of fallopian tube.

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