article_snippet.sent: But as Identical twins age different life experiences, such as smoking or diet, create variations in the number of hydrogen bonds in the DNA.
article_snippet.sent: But as Identical twins age Identical twins different life experiences create a variation in the number of hydrogen bonds within DNA (illustrated).
article_snippet.sent: But as Identical twins grow older Identical twins different life experiences create a variation in the number of hydrogen bonds within the DNA.
highlights_snippet.sent: As Identical twins age, the number of hydrogen bonds in the DNA changes due to  different life experiences such as smoking and different diets .
  