In John Ringo's book series, The Council Wars, this was all quite common up to the events of the first book (There will be dragons, iirc). Memory serves, the main character of the series is rather genetically screwed up because of his ancestor's genetic mods, and can hardly take care of himself, until he finds an experimental treatment.
Seems to me that its a logical issue, if one were to start splicing together DNA on a wide spread scale - all that junk DNA can't possibly be doing you any good.
Seems to me that its a logical issue, if one were to start splicing together DNA on a wide spread scale - all that junk DNA can't possibly be doing you any good.