CGS-authored

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The federal government is considering whether to allow scientists to take a controversial step: make changes in some of the genetic material in a woman's egg that would be passed down through generations.

of the Columbia University Medical Center, a member of one of two teams of U.S. scientists pursuing the research, calls the effort to prevent infants from getting devastating genetic diseases "noble." Sauer says the groups are hoping "to cure disease and to help women deliver healthy, normal children."

But the research also raises a variety of concerns, including worries it could open the door to creating "designer babies." The Food and Drug Administration has scheduled an to consider the issues.

Specifically, the research would create an egg with healthy (mtDNA). Unlike the DNA that most people are familiar with — the 23 pairs of human chromosomes that program most of our body processes — mtDNA is the bit of genetic material inside mitochondria, living structures inside a cell that provide its energy.

Scientists estimate that 1 in...