Identical twins have the same DNA. However, as they age, environmental factors can influence which genes are expressed in each twin. For instance, if one twin is a smoker, that twin will show
differences in his or her aging and wrinkling of skin. Imagine if a set of twins were born and
adopted by two separate parents. Below is an explanation of the lifestyles that each of the twins
grew up with. Explain in your own words how their genes would be affected and if you believe they
would still look identical when they reach the age of 35.
Twin Number 1 (Anna)
Twin Number 2 (Emily)
o
.
Raised in Colorado
Ate a diet high in protein but low in fat
Led an active lifestyle
Wore sunscreen when outside
Adopted parents were nonsmokers
Raised in Florida
Ate a diet high in fat
Exercised periodically
Went to the beach and the pool often
and sometimes forgot sunscreen
Adopted parents were smokers