Which of the following events is involved in cleavage of the zygote during week 1 of development?
Correct Answer: A decrease in size of blastomeres
Description: Cleavage is a series of mitotic divisions by which the large amount of zygote cytoplasm is successively paitioned among the newly formed blastomeres. Although the number of blastomeres increases during cleavage, the size of individual blastomeres decreases until they resemble adult cells in size.
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Anatomy
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