Shrunk, tamed, crossbred and eaten, are bison now a domesticated species?

缩小、驯养、杂交、被食用，现在野牛能算是驯化物种了吗？

DNA analyses in Namibia found the four groups have not crossbred for million of years and therefore evolved into distinct species.

在纳米比亚行DNA分析发现，这四个品种过去数百年没有杂交，化成不同品种。

Each team is crossbreeding a local European short-grain rice with a long-grain Asian variety that carries the salt-resistant gene.

每个研究组都在杂交一种欧洲本地短粒水稻和一种亚洲长粒水稻，后者携带耐盐基。

Scientists halted the damage by crossbreeding Teosinte with American corn, but that didn't totally solve the problem of genetic diversity.

科学家们通过将 Teosinte 与美国玉米杂交来阻止这种破坏，但这并没有完全解决基多样性问题。

They are selectively bred, not least for docility, and share some cattle genes after crossbreeding that happened a bit over 100 years ago.

人类对野牛行选择性繁殖，主要是为了培育温顺个性，并且在100多年前发生杂交后，野牛也拥有着一些家牛基。