Leo Carries a Gene for Aggression,but He Has Never Been

Leo carries a gene for aggression,but he has never been violent.He was raised in a happy and peaceful household.Lydia,on the other hand,carries the same gene,but she has had several violent episodes in adolescence.She was raised in a physically abusive household.Which explanation best explains why Lydia has been violent but Leo has not?

A) the differences between men's genotype and women's genotype
B) the influence of environmental factors on our gene expression
C) the relationship between genotype and phenotype
D) the effect of the human genome on the environment

Correct Answer:

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