All the arteries except pulmonary artery carry pure blood..it is so because blood flows with a high pressure and speed And because Arteries are situated deeper under the skin have thick-walled with Narrow lumen(cavity) and pulmonary artery carries deoxygenated blood i.e without oxygen..
The answer is A p is the frequency of the dominant allele. So the p squared would be the frequency of the homozygous dominant allele because homo means the same.
