Which of the following best represents a “genetic cross”?
A. Rose flowers are collected, and the color variations are recorded to find out what color is most common.
B. A scientist contacts dog breeders and asks them for information about certain characteristics, including hair color and size.
C. Roses with red flowers and roses with white flowers are bred to see how the flower color in roses is inherited.
D. Pea plants with differently colored flowers are planted in the same field and allowed to breed freely. The flower colors of offspring are recorded.