510 individuals have a widows peak and there would be 2 possibilities. Everyone with a widows peak would have either the WW or Ww genotype. There would be a 25% chance of WW and a 25% chance of Ww. The other 490 people do not show the dominant phenotype meaning all of them share the genotype ww. This means there is a 50% chance of the ww genotype.
