Mom and Baby mtDNA Illustration (image) Penn State Share Print E-Mail Caption A new study by researchers at Penn State and University of California, Berkeley, reveals how mitochondrial DNA--separate from the DNA found in a cell's nucleus--is passed on from mother to child. Credit Chia Hsuan Su Usage Restrictions Credit must be provided alongside image. 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.