46) Exercise reduces the risk for heart disease by A.)decreasing the stroke volume of the heart.
B.)curing high blood pressure.
C.) increasing cholesterol.
D.)strengthening the heart muscle.

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?