How does fertilization in humans takes place? Dont spam, answer perfectly and correctly.
Answers
Answer:
By the fusion of male gamete and female gamete....
A pregnancy starts with fertilization, when a woman's egg joins with a man's sperm. Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
Fertilisation takes place in the Initial Part of the Oviduct. When the sperm and ovum fuse, their fusion (fusion of sperm and Egg) is called Fertilisation. Since it takes place inside the body of the female, it is an Internal Fertilisation. During this process, the nuclie of the sperm and Egg fuse to form a single nucleus. The resultant single cell, formed after Fertilisation , is called a Zygote. The zygote, contains the nuclear part of sperm ( from the father ) and of the egg ( from the mother ). It is for this reason that child has some characteristics of father and some characteristics of the mother.
The Zygote immediately divides into two cells ; these cells then divide again and again, over the next couple of days, and the resulting cluster of cells makes its way to uterus. This cluster of cells continuous dividing its cells to make billions of new cells. It gradually develop the different body parts ; such as Head, eyes, hands, legs, etc,. When the embryo reaches the stage where all its body part can be identified, it is called Foetus. The Foetus, when born, is called an Infant (New born Baby).
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⭐ ADDITIONAL INFORMATION ⭐
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External Fertilisation and External Development : Parents release Sperms and eggs into the surrounding water where Fertilisation occurs and Zygotes develops into Offsprings. For this pattern to succeed, the male and female must shed their gametes in large numbers at the same place and time.
Examples :--- Frogs
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Internal Fertilisation and External Development : Sperms fast from the male into the female body. This fertilization Fertilisation takes place within the female body. The Zygote , after its formation, is surrounded by some secretions along with some reserve food and a shell. These help in the development and protection of the growing embryo.
Examples :--- In animals, like the hen, the development of the chicks take place after the egg has been laid.
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Internal Fertilisation and Internal Development : Both fertilization and development take place in Female body. This means that the formation of the zygote and the development of young one takes place inside the body of the female. Human beings, the elephant, the cow and many other animals belong to this category.