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MCAT Question A Day - 4/29/13

Fruit flies of the genotype AaBb were crossed with individuals of the genotype aabb. The first 1000 offspring included 470 AaBb, 485 aabb, 24 Aabb, and 21 aaBb. What can be inferred from this cross?

A.  It is a dihybrid cross.
B.  It involves independent assortment.
C.  Both A and B
D.  Neither A nor B