Maize is 10 times bigger than its wild ancestor; ancient tomatoes were the size of today's peas.

今天的玉米比它的野生祖先大十倍；古代的西红柿大小和今天的豆子差不多大。

Over thousands of years, farmers bred these wild ancestors into foods like corn and eggplant, that we would recognize today.

几千年来，农民把这些野生祖先培育成玉米和茄子之类的食物，直到今天我们才认识到它们的存在。

Dogs began to diverge from wolves tens of thousands of years ago, when their wild ancestors started interacting with humans.

数万年前，狗和狼开始分化，当时狗狗的野生祖先开始与人类互动。

His had softened during the many generations since the day his last wild ancestor was tamed by a cave-dweller or river man.

自巴克的野狗祖先被穴居人和河居人驯化以来, 许多代都是如此, 他们的脚早就变得柔软了。

There, a special breeding program attempted to bring back a creature that was like the aurochs, which are the wild ancestor of modern cattle.

这个项目在实施一项特殊的育种计划试图培育一种类似欧洲野牛的动物，它们是现代牛的野生祖先。

Dogs may have been domesticated thousands of years ago, but they still consider themselves to be part of a group like their wild ancestors.

狗可能在几千年前就被驯化了，但它们仍然认为自己是一个群体的一部分，就像它们的野生祖先一样。

Since then, the size and shape of the species- including changes to their skeleton, bone chemistry and genetics- has changed far beyond the wild chicken ancestors they were domesticated from.

从那以后，这些物种的大小和形状——包括骨骼、骨骼化学成分和基因的变化——已经发生了很大的变化，远远超出了它们被驯化的野鸡祖先的范围。