Human ReproductionHard
Question
During cleavage, what is true about cells ?
Options
A.Necleocytoplasmic ratio remains unchanged
B.Size does not increase
C.There is less consumption of oxygen
D.The division is like meiosis
Solution
Cleavage is the rapid mitotic cell division of the zygote upot the completion of blastula stage. Cleavage differs from the ordinary mitosis in following respects :
(a) Interphase are shoet and do not involve growth.
(b) Divisions are very rapid nuclear cytoplasmic ratio increases with each division.
(c) There is a decrease in the size of blastomeres (cells resulting from ceavagel), but size and shape of the embryo do not change.
(a) Interphase are shoet and do not involve growth.
(b) Divisions are very rapid nuclear cytoplasmic ratio increases with each division.
(c) There is a decrease in the size of blastomeres (cells resulting from ceavagel), but size and shape of the embryo do not change.
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