 The importance of the Hardy-Weinberg principle lies in the fact that it contains the solution to the problem of blending inheritance that troubled Darwin. Jenkin’s argument that sexual reproduction will rapidly diminish the variation in a population is disproved by the Hardy-Weinberg principle. Sexual reproduction has no inherent tendency to destroy genotypic variation, for the genotypic proportions remain constant over generations, given the assumptions noted above. It is true that natural selection often tends to destroy variation, and is thus a homogenizing force; but this is a quite different matter. The ‘blending’ objection was that sexual mixing itself would produce homogeneity, even in the absence of selection, and the Hardy-Weinberg principle shows that this is untrue.