Which one of the following statements with re | vedclass

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(B) During cleavage,the zygote undergoes rapid mitotic divisions without any significant growth in size. As a result,the total mass of the protoplasm

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In the second cleavage division,one of the two blastomeres usually divides a little sooner than the other.

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(B) During cleavage,the zygote undergoes rapid mitotic divisions without any significant growth in size. As a result,the total mass of the protoplasm does not increase; instead,the cytoplasm is partitioned into smaller cells called blastomeres. $1$. Cleavage does not increase the mass of protoplasm; it decreases the size of individual blastomeres. $2$. In the second cleavage,the division is asynchronous,meaning one blastomere divides slightly earlier than the other. $3$. With each division,the blastomeres become progressively smaller. $4$. The morula is a solid ball of cells (typically $8-16$ cells),not a hollow one; the hollow structure is known as the blastocyst.

Which one of the following statements with regard to embryonic development in humans is correct?

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