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Animal Kingdom

Question
CBSEENBI11002485
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A change in the amount of yolk and its distribution in the egg will effect

  • formation of a zygote

  • the pattern of cleavage

  • number of blastomeres produced

  • fertilization

Solution

B.

the pattern of cleavage

The mode of cleavage is determined by the amount of yolk and its distribution.
(I) Holoblastic - The cleavage, in which the segmentation lines pass through the entire egg, dividing it completely, eg, frog, human egg, etc.
(II) Meroblastic -The lines of segmentation do not completely pass through the egg and remain confined to a part of the egg, eg , insects, birds, reptiles.

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