When one sperm nucleus fuses with the ovum and another sperm nucleus fuses with

Question

When one sperm nucleus fuses with the ovum and another sperm nucleus fuses with two polar bodies this process is called _____. Triple fertilization Quadruple fertilization Fusion Double fertilization None of the above When mating flies, virgin females are distinguished by their ______. Pointed bottoms, sex combs Colorless under belly, dark spot Round bottom, sex combs Colored body, darks spots None of the above The term _____ is always applied to a chromosome with an intact centromere. Inversion Translocation Pericentric Paracentric Derivative

Explanation / Answer

2. D. double fertilization.

3.b. colorless under belly, dark spots.

virgin females are much larger than older females and do not have the dark coloration of mature females. In addition, in the early hours after enclosure, there will be visible a dark greenish spot (the meconium, the remains of their last meal before pupating) on the underside of the abdomen.

4. c. paracentric .

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