Fertilization - Embryology - Sperm fertilization

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Fertilisation or fertilization, also known as generative fertilisation, insemination, pollination, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism or offspring. At the beginning of the process, the sperm undergoes a series of changes, as freshly ejaculated sperm is unable or poorly.

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Comments:

By Grozshura - 03:54
A man may ejaculate 40 million to million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg.
By Kezuru - 21:30
Only about 1 in 1 million sperm that are ejaculated into the vagina will reach the site of fertilization. Estrogen also relaxes the cervix, causes cervical mucus to.
By Neran - 21:44
Fertilization is the fusion of haploid gametes, egg and sperm, to form the diploid zygote. Note though there can be subtle differences in the fertilization process.
By Kagajar - 22:34
Fertilization, union of a spermatozoal nucleus with an egg nucleus to form the primary spermA sperm cell attempting to penetrate an egg (ovum) to fertilize it.

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