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In an egg, the type of cleavage is determined by

1. shape and size of the sperm
2. size and location of the nucleus
3. amount and distribution of yolk
4. number of egg membranes

Correct answer: amount and distribution of yolk

Solution

Cleavage in eggs depends on how much yolk is present and where it is concentrated, because yolk interferes with cell division. Eggs with little yolk divide more completely, while yolk-rich eggs show partial or uneven cleavage.

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