How has the domestic cow been breed from bison?

Domestic cows were not bred from bison. They are distinct species with separate evolutionary histories.

Here's a breakdown:

* Domestic cows (Bos taurus) are descended from the aurochs, a wild cattle species that went extinct in the 17th century.

* Bison (Bison bison) are a different species entirely, more closely related to yak than to cattle.

While both species are large herbivores with similar appearances, their genetic makeup and evolutionary paths are quite distinct.

While there's no direct lineage, it's interesting to note that some researchers believe ancient humans may have cross-bred aurochs with wild cattle from Asia to create the first domestic cattle.

So, while cows and bison share a common ancestor from millions of years ago, their lineages diverged long before the domestication of cows.