In a Series of Studies by Meaney and Colleagues,rat Pups

question 23

Multiple Choice

In a series of studies by Meaney and colleagues,rat pups were randomly assigned to be raised by surrogate mothers who spent a lot of time licking and grooming (high LG) them or surrogate mothers who spent little time engaging in this behavior (low LG) .Rat pups raised by high-LG surrogates grow up to be _____ fearful in novel situations,which can be attributed to a(n) _____ in DNA methylation.

• A)less;increase
• B)less;decrease
• C)more;increase
• D)more;decrease