Data was used to infer genetic ancestry in Brazilians with an admixture model. Some mestizos and whites have a degree of African admixture. In strains without recent admixture the contribution of the latter predominates. There was strong evidence of ancient genetic admixture between the two. Fibroadenomas are benign breast tumours characterized by an admixture of stromal and epithelial tissue. Since 2005, evidence for substantial admixture of Neanderthals DNA in modern populations has accumulated. It can be inferred that Szekelys have more significant German admixture. Jane is predominantly of Tongan descent with Samoan, Fijian and Danish admixture. Studies show a higher Neanderthal admixture in East Asians than in Europeans. In North America, most coyotes and wolves show varying degrees of past genetic admixture. This ethnicity shows a gender-biased admixture. This genetic admixture appears to be gender-biased. Basal Eurasians had little to possibly no Neanderthal admixture. A newer publication shows the genetic admixture of the Africanised honeybees in Brazil. Fick's law describes diffusion of an admixture in a medium.