Many of those wild relatives are said to be endangered.

据说，其中许多的野生近缘种都濒临灭绝。

This is a rare wild relative that grows in the jungles of Sierra Leone.

这种咖啡是一种罕见的野生亲缘植物，长在塞拉利昂的丛林中。

In 1980 their wild relatives were declared extinct-the captured wolves were all that was left.

1980年，它们的野生亲属宣布灭绝——只剩下捕获的这些狼了。

The project is believed to be the largest organized international effort yet to collect and protect crops' wild relatives.

在收集和保护农作物的野生近缘种方面，该项目被认为是迄今为止最大规模的有组织的国际性活动。

In the natural world, dogs' wild relatives don't really bark.

在自然世界 野狗并不会真的吠叫。

They also identified a substance found in the cacao tree but not in its wild relatives.

他们还发现了一种在可可树中发现但在其野生近缘种中未发现的物质。

On top of that, they found that the Agro genes were only present in domesticated sweet potato varieties but not in their closest wild relatives.

最重要的是，他们发现 Agro 基因只存在于驯化的甘薯品种中，而不存在于它们最接近的野生亲缘种中。

Like many of our crops, the fungus they farm is genetically distinct from its wild relatives and can no longer survive without their help.

像我们的许多农作物一样，他们种植的真菌在基因上与其野生近缘种截然不同，没有它们的帮助就无法生存。

By comparing the genomes of modern plants to those of their wild relatives, biologists have been working out what genetic changes occurred as plants were domesticated.

通过将现代植物的基因组与其野生近缘植物的基因组进行比较，生物学家一直在研究植物在驯化过程中发生了哪些遗传变化。

And it’s because of all that food - even in a small enclosure, a well-fed female can give birth to more than a dozen cubs a year, several times more than her wild relatives.

正是因为有了这些食物——即使在一个狭小的圈地里，一只喂养充足的雌性每年也可以产下十几只幼崽， 比她的野生亲戚多几倍。