Imagine a population that is polymorphic at the a locus. If the frequency of the a allele is 80% and the frequency of the a allele is 20%, what proportion of the population would you expect be heterozygotes?.

Vincent van Gogh was a unique artist who worked with a sense of urgency which often ... Largely self-taught, van Gogh started his career copying prints and reading ... Although these did not feature his unique brush stroke textures.
so B is the answer