What do studies of adopted children, identical twins, and fraternal twins reveal about the relationship between obesity and genetics?Question 9 options:
There does not appear to be any relationship between heredity and body type or level of fatness.

Body type seems to be a function of heredity, while level of fatness appears to be influenced primarily by environment.

Fatness levels appear to be influenced by heredity, while body type seems to be a function of environment.

Both body type and level of fatness seem to be influenced by heredity.