12. In many scientific studies, several variables can affect the results. You want to investigate two related areas: 1 Male rats eat more than female rats do. 2 Large rats, regardless of their sex, eat more than smaller rats do. Design an experiment to test ONE of these two ideas.

Two pea plants with yellow peas are crossed. most of their offspring have yellow peas, but about 25 percent of the offspring have green peas. for pea color, yellow is the dominant trait and green is the recessive trait. what does this tell you about the two parent plants? a. the parent plants have only dominant alleles for pea color. b. the parent plants are heterozygous for pea color. c. pea color follows an incomplete dominance pattern of inheritance. d. the parent plants are homozygous for pea color.