The 20 amino acids vary only in their?
a. carboxyl groups
b. side groups
c. amino groups
d. lipid groups

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?

Which structure in the cardiovascular system connect arteries to veins?

Is genetic diversity the same as genetic variation?