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Question

By the end of how many weeks, major organ system are formed during the embryonic development?

A
4 weeks
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B
8 weeks
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C
12 weeks
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D
24 weeks
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Solution

The correct option is D 24 weeks
  • Embryonic development starts with the fertilization of the egg cell (ovum) by a sperm cell, (spermatozoon). Once fertilized, the ovum is referred to as a zygote, a single diploid cell. The zygote undergoes mitotic divisions with no significant growth (a process known as cleavage) and cellular differentiation, leading to the development of a multicellular embryo.
  • By the end of 24weeks, a major organ system is formed during the embryonic development.
  • So, the correct answer is '24 weeks'.

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