A heterozygous fruit fly with normal wings and a gray body (VvBb) is crossed with homozygous flies with vestigial wings and black bodies (vvbb). This type of cross is known as a
A) monohybrid cross.
B) dihybrid cross.
C) polytropic cross.
D) true breeding cross.
E) chromosomal cross.

Question

Quizplus · Accepted Answer

A dihybrid cross involves two traits, in this case, wing type and body color. The cross between a heterozygous individual (VvBb) and a homozygous recessive individual (vvbb) for two traits fits the definition of a dihybrid cross.

A Heterozygous Fruit Fly with Normal Wings and a Gray