In a population of tree frogs, the allele that causes yellow eyes (Y) is dominant over the allele that causes orange eyes (y). If 85% of frogs have yellow eyes, what is the frequency of the dominant allele?

Hardy-Weinberg PrincipleGenotype frequency equation [tex] p^{2} +2pq + q^{2} = 1 [/tex]Where p² is the freq of homo dominant genotype, 2pq is the freq of heterozygous genotype and q² is the freq of homo recessive genotype. Allele frequency equation p + q = 1 Where p is the frequency of dominant alleles and q is the frequency of recessive alleles. Yellow eyes in the frog offspring is a phenotype (physical trait) that would be a expressed by a geneotype (YY or Yy). This frequency, 0.85 includes: p² + 2pq0.85 + q² = 1 q² = 0.15 p = [tex]  \sqrt{0.15} [/tex] Then p + [tex] \sqrt{0.15} [/tex]  = 1 1 - [tex] \sqrt{0.15} [/tex] = p p = 0.61361%