(Mark H.
Cloning wasn't common until about 3 years ago, so "gene therepy" is just around the corner. It can be done today. Right now. Two experts in the field told me that. Yes, it would be expensive, as was cloning a few years ago. Heck it was 50,000 or more a few short years ago, and now it is down to what, maybe 15,000?
While discussing TH/PHA with a dr. I ask if it was possible to remove the defective gene and make a "free" animal. His reply was "Yes." But it would have to be from a clone if you wanted a clean version of (for example) heatwave. Can't tell ya the details, but that was his reply.
And you are 100% right about "super duper defective bull" being nothing but defective, but many on this board will disagree with you and me on that. In fact, they do not refer to them as "defective" at all. And again, you are correct to say to "bite the bullet and cull the animal".... but then again, why did they clone "heatwave"? I mean, he is defective. (No, I do not use heatwave, or any other carrier bull for that matter, and I sold all my carrier critters to slaughter, so trust me, I am 100% in agreement with you on this!)
Herefordfootball: I am flattered he called me "girl"!! He must not know my age!!! ;D