A change in the amount of yolk and its distri | vedclass

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(A) : Cleavage is a series of rapid mitotic cell divisions by which a single fertilized egg cell (zygote) is transformed into a multicellular structur

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pattern of cleavage

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(A) : Cleavage is a series of rapid mitotic cell divisions by which a single fertilized egg cell (zygote) is transformed into a multicellular structure called the blastula.During cleavage,there is no significant growth in the size of the embryo,and the shape remains largely unchanged except for the formation of a central cavity known as the blastocoel.The ratio of nuclear material $(DNA)$ to cytoplasm increases with each division.The pattern or mode of cleavage is primarily determined by the amount of yolk present in the egg and its distribution (pattern of yolk deposition).Based on the yolk content,cleavage is classified as holoblastic (total) or meroblastic (partial).

$A$ change in the amount of yolk and its distribution in the egg will affect

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