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Cleavage in mammalian egg is:

1. Superficial meroblastic
2. Discoidal meroblastic
3. Unequal holoblastic
4. Equal holoblastic

Correct answer: Equal holoblastic

Solution

Mammalian eggs have very little yolk, so cleavage is complete (holoblastic) rather than partial. Because the yolk is minimal, the divisions are typically equal, making the correct choice equal holoblastic.

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