Same+Difference+Twins'+gene+regulation+isn't+identical

​ Even though identical twins have the same DNA they still have differences in the way they look or their susceptibility to get a certain disease. Up until now there has been a lack of understanding as to whysuch differences occur. New research has shown that perhaps environmental influences affect which genes are turned on and which are switched off. This suggestion is called epigenic modification. This usually occurs as a result of two types of chemical groups that latch on to chromosomes. Research was done on 80 pairs of identical twins between the ages of 3-74. The twins were screened for differences in epigentic profiles between members of the pair. The reserch showed that there were over three times as many differences in the older twins than in the younger ones. ​ These results show that environmental effects really do affect which genes are turned on and which ones are turned off. Perhaps people are 50 percent genetics and 50 percent environment. These finding show that environmental factors affect the health of everyone, not just identical twins.