Weeding out genetic defects: New study moves researchers a step closer to transferring DNA to avoid genetic diseases

Can we someday manipulate changes in DNA so that genetic diseases are a distant memory? Researchers at the Oregon Health and Science University hope they have completed the first steps to seeing this dream become a reality for many couples predisposed to genetic challenges caused by defects in their mitochondia. A new report describes an experimental procedure that someday could help couples avoid passing certain genetic diseases on to their children, according to an Associated Press report. The researchers transferred DNA between eggs from rhesus monkeys, resulting in the birth of four healthy monkeys, scientists report. The procedure still needs to address safety questions and possible ethical hurdles, but the researchers described the results as "exciting." The report appears online in the journal Nature.