For the first time, scientists have altered genes in human embryos and allowed them to briefly develop.
The research crosses a boundary that scientists have avoided since the dawn of genetic engineering 42 years ago. It marks the first time researchers have attempted to modify the genetic makeup of a human embryo in ways that would allow the genetic change to be passed to succeeding generations.
For some researchers working to develop gene therapies, in principle such genome editing could be used to combat inherited diseases. But to others, it also could lead to attempts to genetically enhance humans in ways that could last for generations with unpredictable results.
In this century the Rubicon will be passed. It is possible that already today the targeted experiments have been started. Everything science has discovered will be used. I.V.