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Cleavage-the start of multicellularity

Cleavage is the process that follows fertilization, marking the start of multicellularity. After fertilization, the zygote undergoes a series of rapid divisions known as cleavage, resulting in the formation of blastomeres—two initial cells created from the zygote. Each blastomere receives a distinct portion of the egg cytoplasm, which is influenced by the amount of yolk present. This division pattern is crucial for the embryo's development and organization, playing a significant role in the eventual formation of tissues and organs.

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Cleavage-the start of multicellularity

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  1. 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

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