MCQ
In frog, holoblastic cleavage is not found due to:
- AA dark pigment in animal pole.
- BHeavy yolk in vegetal pole.
- CYolk concentrated in center of egg.
- DNucleus is assymetrical in position.
Explanation:
Frog has telolecithal egg.
Here, yolk is more concentrated on one end of the egg, the vegetal hemisphere with the cytoplasm plus the nucleus concentrated at the other end, the animal hemisphere.
In such kind of eggs, complete or holoblastic cleavage is not possible.
So, here, meroblastic cleavage occurs.
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