41. Genetic analysis shows lactase persistence has developed several times in different places independently in an example of convergent evolution. 42. For one week, they got milk that was treated with the enzyme lactase to break down the milk sugar. 43. Each disaccharide is broken down with the help of a corresponding disaccharidase ( sucrase, lactase , and maltase ). 44. The optimum temperature for human lactase is about 37 �C for its activity and has an optimum pH of 6. 45. Lactose in food ( such as dairy products ) is broken down by the enzyme lactase into glucose & galactose. 46. The greater diversity of lactase persistence alleles in Africa is said to be the product of a soft selective sweep. 47. In contrast, for societies which did not engage in pastoral behaviors, no selective advantage exists for lactase persistence. 48. Stupid question, but, in lactase persistent, is lactose digested into glucose and consequently raises blood glucose levels? 49. Perhaps the genetic variation that is abnormal is the one that allows producing a lot of lactase after you are weaned. 50. Finally, lactase , the enzyme that helps break down lactose, can be purchased in pill form and taken with meals.
