What is the role of cell differentiation in the development of the organism

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?

If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?

What molecules does hemoglobin decay into over time