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Embryonic Development

Embryonic Development

 

 

 

Introduction:

 

One of the fundamental tenets in biology is that all life comes only from pre-existing life. Individuals are born and they die, but organisms rise above time by reproducing offspring. Reproduction is a marvellous culmination of individual transcendence. It is the only method for compensation of the loss of life due to death. Reproduction also makes the perpetuation of life easy. Plants and animals reproduce by employing a wide range of mechanisms. But the basic types are asexual and sexual. Sexual reproduction requires the formation of gametes, which fuse to form zygote and the zygote passes through embryonic development to form a young individual. Development is the emergence of a multicellular organism from a single group of cells. It involves growth, differentiation and morphogenesis. Growth is characterised by cell proliferation, or secretion of extracellular materials. Differentiation means diversification of cell to attain their specific functions. Morphogenesis is the emergence of new pattern in the embryo.

 

 

 

Sub Topics of Nervous System

 

 


 

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