Aging and Mutant Mitochondria

DNA in the mitochondria accumulates mutations over time, which might contribute to aging

Mitochondrial DNA is the small circular chromosome found inside mitochondria. (Wikimedia commons, National Human Genome Research Institute)

The one genome to rule them all?

Most of the DNA in our cells is contained in the cell’s nucleus. There, the As, Cs, Gs, and Ts code for the proteins that keep our bodies running are subjected to stringent proofreading…