Define codominant and give me an example

Blood, made up of red and white blood cells, work together to form

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?

What is the most important inorganic material for livings things? ! due tomorrow!