Biology, asked by Deepikabeniwal0, 1 year ago

IS there no fertilization takes place in 2 celled stage?

Answers

Answered by Mazser
0
No, fertilization takea place ya
Answered by Anonymous
1
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Human fertilizationis:-

▪ the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. The result of this union is the production of azygote cell, or fertilized egg, initiating prenatal development. Scientists discovered the dynamics of human fertilization in the nineteenth century..

▪The process of fertilization involves a sperm fusing with an ovum. The most common sequence begins with ejaculation during copulation, follows with ovulation, and finishes with fertilization. Various exceptions to this sequence are possible, including artificial in semination,in vitro fertilization, external ejaculation without copulation, or copulation shortly after ovulation. Upon encountering the secondary oocyte, the acrosome of the sperm produces enzymes which allow it to burrow through the outer jelly coat of the egg. The sperm plasma then fuses with the egg's plasma membrane, the sperm head disconnects from its flagellum and the egg travels down the Fallopian tube to reach the uterus.

▪>>In vitro fertilization (IVF) is a process by which egg cells are fertilized by sperm outside the womb in vitro....

☆▪The embryo is usually transferred into the mother is uterus at the 4 - 8 celled stage, usually on the third day after fertilization ...
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