Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Refer to the graph below.

-On which basis do the data in the graph best support a high heritability for schizophrenia?

A) Dizygotic twins have a greater likelihood of being concordant for schizophrenia than monozygotic twins.
B) The likelihood of schizophrenia varies with the degree of genetic similarity to someone with the condition.
C) Monozygotic twins have a greater likelihood of being discordant for schizophrenia than other pairs of siblings.
D) The likelihood of schizophrenia varies with the degree of environmental similarity to someone with the condition.