Identical twins, who have inherited a gene associated with obesity, are adopted by different families. One is growing up in a very health-conscious family, while the other is growing up in a family that eats a lot of fast food and never exercises. Which statement describes their likely weights upon reaching adulthood? A.
They will both be overweight because they both have the gene associated with obesity.

B.
They will both be of average weight because their genes will mutate as they grow and develop.

C.
The weight of the twins is difficult to predict because both genes and environmental factors affect weight.

D.
One twin will be overweight and the other will be of average weight, because they were raised in different environments.

c

Explanation:

this statement is true and no matter what the genes say environmental parts play a huge role

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

there's the proffessional site that will you.