Aging Clues Found in Stem Cell Ribosomal DNA

Studies in fruit flies have shown how cells in the offspring of older fathers can replace copies of genes that have been lost due to aging. The findings by Yukiko Yamashita, Ph.D., a Howard Hughes Medical Institute investigator, and colleagues at the University of Michigan Life Sciences Institute provide clues as to how some cells could overcome genomic shrinkage that appears to occur as an organism ages. If the same results can be confirmed in humans, they could offer a new level of understandi