Adult lactose tolerance is not an advantageous evolutionary trait.
Brines
Juan
J
D005075:Biological Evolution; D018703:Founder Effect; D005787:Gene Frequency; D006801:Humans; D007785:Lactose / Q000378:metabolism*; D007787:Lactose Intolerance / Q000235:genetics*; D009154:Mutation; D012641:Selection, Genetic
D007785:Lactose