How the development of embryo take place ?
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To make a new person, a fertilised egg has to divide - making first two, then four, eight, 16, 32, 64, 128, 256 and eventually billions of cells. An embryo takes nine months to grow into a baby. To do this, the cells that make up the embryo have to move around, specialise, rearrange themselves and sometimes even commit suicide. How does each cell 'know' what to do, and what role do genes play in this process?
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When zygote forms by fertilisation of sperm and egg, it divides repeatedly to give rise to a ball of cells.
The cells then begin to form groups.
These groups then give rise to different tissues and organs of the body.
This forms embryo, which then get embedded into wall of the uterus.
This their continues to develop, and develops body parts -hands, legs, head, eyes, ears etc.
The foetus then forms, which when get fully developed, the mother gives birth to the baby.
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