Is method of reproduction considered a trait?

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?

Some substances but not other can cross the (blank) membrane of a cell

What two factors does carrying capacity compare? population size and resource use population growth and resource availability resource use and time population size and time