What are congenital diseases and the pandemic disease?

Environmental differences within ecosystems are generally caused by

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?

One of the purposes of transcription is to produce a sequence of bases that