Lactose tolerance may have evolved by providing a modest ...

[Garrulous]

Lactose tolerance may have evolved by providing a modest selective advantage to people __________.
 
  a. who domesticated animals and lived in areas where nutritional resources were scarce
  b. who became stronger through the extra calcium provided by milk
  c. who could wean their children sooner
  d. who needed to hunt less due to the extra protein provided by milk

Question 2

Morphological features are rarely used to study gene flow among populations because ________.
 
  a. they are regulated by a few genes, which are insufficient to characterize gene flow
  b. they are not affected by natural selection
  c. they require hundreds of generations to change
  d. the environment may play a large role in the expression of morphological traits

[komodo7]

Answer to Question 1

Correct Answer: a

Answer to Question 2

Correct Answer: d

[Garrulous]

Wow, this really help

[xiazhe]

Thanks for the timely response, appreciate it