What is true for cleavage?

A) Size of cells decreases

B) Size of embryo increases

C) Size of embryo decreases

D) Size of cells increases

Answer: A) Size of cells decreases

Explanation: The zygote starts dividing by mitosis called cleavage. The repeated mitotic division results in an increasing number of smaller blastomeres. The cells do not grow in size. Blastomeres are retained within the zona pellucida layer and form a cluster of cells having a similar size as that of a zygote.

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