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During cleavage, what is true about cells?A. Nucleocytoplasmic ratio remains unchangedB. Size does not increaseC. There is less consumption of oxygenD. The division is like meiosis |
Answer» Correct Answer - B (b) Cleavage is the rapid mitotic cell division of the zygote upto the completion of blastula stage. Cleavage differs grom the ordinary mitosis in following respects: (a) Interphase are short and do not involve growth (b) Division are very rapid, nuclear cytoplasmis ratio increases with each division. (c) There is a decrease in the sice of blastomeres (cells resulting from cleavage), but size and shape of the embryo do not change. |
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