Unfortunately, genetically intact bison may be extinct throughout their indigenous range in North America, according to scientists who tested the entire genome of all seven founding population lineages. (Genomic evaluation of hybridization in historic and modern North American Bison (Bison bison), Scientific Reports, April 16, 2022)
The detection of cattle genes in the Yellowstone population is likely an artifact and result of reintroducing bison on the Northern Range over a century ago. These bison were sourced from private owners who purchased cross-bred bison and cattle, or cross-bred the two species in captivity and sold them to the U.S. government. While more extensive testing has yet to be done, genetically intact bison are unlikely to be found.
Now that your questions about wild bison are answered,
will you join the fight to defend them?
