So far, selective breeding has kept up.

到目前为止，选择性育种还在继续。

One was the method of selective breeding.

一种是选择育种的方法。

Fans of cheap chicken have selective breeding to thank.

便宜鸡肉的粉丝们要感谢他们的选择性繁殖。

Central America, and Mexico cultivated the tomato, perfecting the plant through selective breeding.

中美以及墨西哥地区，他们种植西红柿，并且通过精心选种来达到优化的目的。

Unlike much produce sold in the supermarket, modern peaches aren't the result of selective breeding.

与超市出售的许多产品不同，现代桃子不是选择性育种的结果。

And D. selective breeding is the major hole in the theory of natural selection.

和 D. 选择性繁殖是自然选择理论中的重大漏洞。

The find may show that Romans at the time were carrying out " selective breeding" of dogs.

这一发现可能表明当时罗马人让狗进行了" 选择性繁殖" 。

Darwin's theory is that selective breeding occurs in nature, as natural selection is the engine behind evolution.

达尔文的理论是选择性育种是自然界中自然发生的，因为选择是进化背后的引擎。

Selective breeding favored genes for reduced height, because they came along with genes for increasing yields to feed a growing population.

“现在，如果你走过小麦田，看到的小麦大概只到膝盖。

One possibility is that it's selective breeding.

一种可能性是它是选择性育种。

Selective breeding could someday give us shorter plants with better protein and higher grain yields.

有朝一日，选择性育种可能会给我们带来更矮的植物、更好的蛋白质和更高的谷物产量。

Selective breeding is where a closely-related modern species is given characteristics of the extinct relative.

• 选择性育种是指将密切相关的现代物种赋予已灭绝的亲戚的特征。

Smart farming includes selective breeding so animals can survive local conditions as well as increase their production.

智能农业包括选择性育种，使动物能够在当地条件下生存并增加产量。

For thousands of years we humans have used selective breeding to create animals and plants with properties that have been useful for us.

“数千年来，我们人类利用选择性育种培育出了带有特性的动植物，而这些特性有利于我们。

Now what this leaves us with is answer choice D. selective breeding is the major hole in the theory of natural selection.

现在我们还剩下选项 D. 选择性繁殖是自然选择理论中的重大漏洞。

Scientists and farmers have always used selective breeding with animals and crops to bring you bigger and better food.

科学家和农民一直在对动物和农作物进行选择性育种，为您带来更大更好的食物。

They've spent centuries orchestrating a selective breeding program to cross bloodlines of the universe's noble houses, and hope to mate Margot with Feyd-Rautha Harkonnen.

她们花了几个世纪的时间，精心策划了一个选择性繁殖计划，以宇宙中贵族家族的血统互相混合，希望能让玛戈和菲德·罗萨·哈克南结合交配。

The fourth paragraph, which we will focus on a little bit more for the sake of this specific question, is selective breeding and natural selection.

第四段，为了这个题，我们将更多地关注选择性育种和自然选择。

So we need something else to be able to determine whether it's selective breeding causing this decrease or something else.

所以我们需要其他东西来确定是选择性育种导致了这种减少还是其他原因。

If it's not selective breeding, what else has contributed to goldenrod becoming less nutritious over the last 150 years or so?

如果不是选择性育种，在过去 150 年左右的时间里， 还有什么其他原因导致一枝黄花营养价值下降？