1.

Cleavage in mammalian egg ,isA. equal holoblasticB. unequal holoblasticC. superficial meroblasticD. discoidal meroblastic

Answer» Correct Answer - B
(b) The progressive division of cells during enbryonic growth is called cleavage. It is not accompanied by increase in the overall size of embryo.
The first cleavage occurs in human zygote about 30 hours after fertilisation. It is holoblastic (complete) and gives rise to the blastomeres-one of which is slightly larger than the other.


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