Heritability refers to a. how much of a trait is influenced by ...

[jace]

Heritability refers to
 
  a. how much of a trait is influenced by genetic factors for a specific individual.
  b. the proportion of the differences in a trait among a group of people that is due to genetic differences among these people.
  c. the percentage of pairs of people where, if one person in the pair has the trait in question, the other person in the pair also has the trait in question.
  d. the degree to which one trait increases with increases in another trait.

Question 2

Behavioral genetics is best described as the scientific study of how _____ impact development.
 
  a. genetics alone
  b. environmental factors alone
  c. genetic and environmental factors together
  d. non-genetic and non-environmental factors together

[shoemake]

Answer to Question 1

b

Answer to Question 2

c

[jace]

Great answer, keep it coming

[Kedrick2014]

Gracias!