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explain the process of fertilisation in human |
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Answer» Fertilization is the biological process of fusion of male and female gametes resulting in the formation of a zygote. The fertilization in humans takes place in the fallopian tube.In this process, semen containing thousands of sperms is inseminated into the female ****** during coitus. The sperms move towards the uterus but not all succeed in reaching the opening of the fallopian tube.The secondary oocyte releases from the matured Grafian follicle of the ovary and enters into the fallopian tube, where it is fertilized within 24 hours, after which it is released from the ovary.Though surrounded by several sperms, the oocyte is fertilized by a single sperm. During meiosis-II, the sperm enters the secondary oocyte and completes the meiosis. After this, the secondary oocyte is known as the egg.Both sperm and egg can show their vitality only to a limited period. Sperm is alive for 48-72 hours in a\xa0female reproductive system, whereas the egg can be fertilized for 24 hours before it is released. |
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