Question

Division of human egg is

• A. Equal holoblastic
• B. Unequal holoblastic
• C. Superficial meroblastic
• D. Discodial meroblastic

Answer 1

Answer: (B)

Unequal holoblastic

Human eggs are yolk-free which is known as alecithal. The division of human eggs is equal holoblastic in which the “cleavage divides the zygote into two equal parts”. Cleavage occurs in the fallopian tube which is known as oviduct during “conduction of zygote towards uterus”.

It is holoblastic due to microlecithal condition of the egg which is “radial, indeterminate and equal”. Holoblastic is the division of the whole egg.