title: Human intestinal lactase and Lamarckian evolution.
mesh_terms: D000293:Adolescent; D000328:Adult; D005075:Biological Evolution; D005696:Galactosidases / Q000096:biosynthesis*; D006801:Humans; D007421:Intestine, Small / Q000201:enzymology*; D007785:Lactose / Q000378:metabolism; D009154:Mutation; D001616:beta-Galactosidase / Q000096:biosynthesis*
chemical_list: D005696:Galactosidases; D001616:beta-Galactosidase; D007785:Lactose