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Cleavage-the start of multicellularity. Zygote enters cleavage after the fertilization of the egg. Series of divisions occur in which the cell is pinched into 2 ( blastomeres ) Puts different parts of the egg cytoplasm into different blastomeres
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Cleavage-the start of multicellularity • Zygote enters cleavage after the fertilization of the egg. • Series of divisions occur in which the cell is pinched into 2 (blastomeres) • Puts different parts of the egg cytoplasm into different blastomeres • The amount of yolk also influences the division pattern