How much Homosapien DNA do you need to retain a right to life?

Question

I was watching a video on genetic engineering, and was wondering how far you could alter human DNA, and still give that 'person' human rights. I think most would agree that you can "improve" infinitely and retain rights, but what if you were mixed 50/50 with a fly (Movie:The Fly)? 70% fly? Is there a point where we could kill you?

Update:

bigjohn B: ya, so I guess I should have specified that it is 50% / 70% of the DNA which is unique to the particular species.

the lysssss · Accepted Answer

Apparently you can be 100% human and they can still kill you.

Sophist · Answer

Neanderthal DNA is about 99.9% of modern human. Yet there is no clear evidence that we could have interbred with them. So the amount of DNA gets very small that differentiates us from other species. Our humanness is confined to only a few base pairs.

bigjohn B · Answer

Chimps have about 98% of the same DNA as humans!

Anonymous · Answer

Less than half, but you forgot animal rights. People go to prison for animal cruelty and murder, not to mention muti-thousand dollar fines.

Anonymous · Answer

All of it and you must be over 6 weeks old.

? · Answer

All living creatures should have rights

How much Homosapien DNA do you need to retain a right to life?

6 Answers