Twin studies allow researchers to assess hereditary influences, ...

[arivle123]

Twin studies allow researchers to assess hereditary influences, in part, because
 
  A) genetic overlap for fraternal twins is greater than for non-twin siblings.
  B) twins are usually motivated to act similarly.
  C) genetic overlap is 100 for identical twins and 50 for fraternal twins.
  D) environmental influences are eliminated in twin studies.

Question 2

Which of the following is NOT associated with marital conflict?
 
  A) Alcoholism.
  B) Role compromises.
  C) Physical health problems.
  D) Domestic violence.

[JCABRERA33]

Answer to Question 1

C

Answer to Question 2

B