STEIN: But Lanner’s experiments are hugely controversial. Some people have moral objections to doing any kind of research on human embryos. But editing the DNA in embryos is even freaking out people who think that’s OK.
MARCY DARNOVSKY: The production of genetically modified human embryos is actually quite dangerous.
STEIN: Marcy Darnovsky heads a genetic watchdog group called the Center for Genetics and Society.
DARNOVSKY: It’s a step toward attempts to produce genetically modified human beings. This would be reason for the already grave concern.