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Human Reproduction — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Reproduction1 Mark
MCQ
Type of cleavage found in mammals is:
  • ✓
    Holoblastic
  • B
    Meroblastic
  • C
    Superficial
  • D
    None of the above
✓

Answer

Correct option: A.
Holoblastic
Holoblastic cleavage is that in which the cleavage furrow divides the egg completely and the blastomeres formed may be equal or unequal in size.
It occurs in alecithal or microlecithal eggs.
Generally, the mammalian egg is alecithal, meaning no yolk.

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