What is the define for infection

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?

Why does it matter if osmosis is put into a “scab” or a “nosebleed? ” where would that leave him?

Plz ! what does it mean for an allele to be dominant?