Longevity Mutation Far and Wide (image) Brown University Share Print E-Mail Caption Each slice of the pie chart represents a line of fruit flies with a different geographic origin. The colored area in each represents the frequency of Hoppel allele in that line. Flies with the Hoppel transposon lived considerably longer than flies without. Credit Helfand and Reenan, Brown University Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.