well, actually someplace i heard that like at least more than half of the dna (or was it like 80%) of all dna on the planet is identical, but in dna, 50-20% is immense. but also what about the familiarity of dino's and chickens?? i could see the mamoth, seeing as how they have access to frozen, not petrified, or possibly decayed dna. maybe they'll find a frozen dino in the ice some time. . . . that'd help.