wouldn't it be great if the biotech firms could
come up with things like

Would it?

How about they first understand the full implications of what they're
doing before they start messing about like this? The
one-gene-equals-one-attribute theory of genetics has been shot down
over the last year - things like RR and Bt crops are theoretical
prototypes which have been allowed out into the field without proper
safety testing...

It's simply not possible to insert or delete characteristics without
affecting other aspects of the organism in unknown ways.

regards
Marcus