Which of the following describes a limitation of Darwin’s ideas

Which of the following describes a limitation of Darwin’s ideas in The Origin of Species? O Darwin failed to include phenotypic variation into his explanation of evolution. Darwin failed to integrate the blending theory of inheritance into his ideas. O Darwin did not know the mechanism by which traits were inherited (but Mendel did). Darwin could only account for individual, not population-level, phenotypic variation. Question 6 A population of 100 fish on a reef is NOT in Hardy-Weinberg equilibrium. For a color gene, 40 individuals are homozygous dominant, 50 are homozygous recessive, and the rest are heterozygous. What is the frequency of the recessive allele in this population?