explain how the code in your dna relates to your physical appearance as well as the functioning of your body. how might a change in this code impact the body?

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?