The grey crescent is the area:

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(B) The grey crescent is a specialized region of the cytoplasm that appears in the fertilized egg of an amphibian,such as a frog. It forms in the equa

Vedclass · Accepted Answer

Just opposite to the site of entry of sperm into the ovum.

Vedclass · Answer

(B) The grey crescent is a specialized region of the cytoplasm that appears in the fertilized egg of an amphibian,such as a frog. It forms in the equatorial zone of the egg,specifically on the side geometrically opposite to the point where the sperm enters the ovum. This region is crucial for the initiation of gastrulation and the establishment of the dorsal-ventral axis of the embryo.

Similar Questions

$A$: In frog,a gray crescent is formed during fertilization.
$R$: It is because the black pigment granules move away from the point of entry of the sperm in the animal half.

The development of the eye in vertebrate embryology is studied under which of the following processes?

In a frog,how many ova and spermatozoa are produced from $50$ secondary oocytes and $50$ secondary spermatocytes,respectively?

Fertilization is external in:

In which of the following animals is cleavage restricted to a small portion of the animal pole of the egg?

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