breed true

"In this one, at least, my blood has bred true," he told them.

While you, in your farmers' world, wait to see if the line has bred true.

A man might die satisfied, knowing he had bred so straight and true.

I just want to find out whether my offspring will breed true.

With all the radiation around I wouldn't have bred true anyway.

One of the most difficult things to do in these experiments is to get a new strain to breed true.

If they do continue to breed true, then the Coldah's leaving will have no effect.

An old man said then I could never breed true and were better dead.

Whether or not it will breed true is an interesting topic of speculation, but one having nothing to do with the problem now in hand.