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During cleavage, what is true about cells?

1. Nucleocytoplasmic ratio remains unchanged
2. Size does not increase
3. There is less consumption of oxygen
4. The division is like meiosis

Correct answer: Size does not increase

Solution

During cleavage, the embryo undergoes rapid mitotic divisions with little or no cell growth between them. As a result, the total embryo size stays about the same while individual cells become smaller.

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