How far should such genetic tinkering be allowed to progress?

I guess a little old-fashioned heredity survived all that high-tech genetic tinkering, she surmised.

We're talking about psychological conditioning, genetic tinkering, and every kind of mental or physical torture you can think of.

Those same features mean genetic tinkering will be required, before the first settlers step outside these domes.

The pale, translucent skin was Marcus's own; the contrasting black hair and lashes were benign genetic tinkering.

I would expect that some of the genetic tinkering that went on in the Ruling Queen's time might be the cause.

Even biotechnology supporters concede that genetic tinkering can have unanticipated results.

At this Sanctuary, the director had stopped the genetic tinkering and was letting the cats find out who they were by themselves.

He kept the notes for his genetic tinkering stored in his head.

Her blood didn't have the right enzymes, and thanks to some illegal genetic tinkering to save my life, I had survived being born possessing them.