Human ReproductionHard

Question

Amount of yolk and its distribution are changed in the egg. Which one is affected ?

Options

A.Pattern of cleavage
B.Formation of blastomeres
C.Number of blastomeres
D.Fertilization

Solution

Pattern of cleavage are based on amount of yolk and its distribution in the eggs. Any change in amount of yolk and its distribution in the eggs. Any change in amount and distribution of yolk directly affects the pattern of cleavage. As holoblastic cleavage is found in microlecithal, meso lecithal or telolecithal types of eggs.Meroblastic cleavage is found in macrolecithal and highly telolecithal eggs of reptiles, birds and monotreme mammals.

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