During cleavage, what is true about cells?

Options

A. Nucleocytoplasmic ratio remains unchanged
B. Size does not increase
C. There is less consumption of oxygen
D. The division is like meiosis

Answer

B

Explanation

(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.