Recent work on both these fronts suggests that happiness is highly heritable.

最近，对这两个前沿问题的研究表明幸福感在很大程度上是遗传的。

How can this be, given that intelligence is highly heritable, and clever folk breed no more prolifically than less gifted ones?

要知道智力具有高度遗传性，而聪明的生育率井不比差的更高，那么这一成就是如何取得的呢？

But while twin studies are useful for establishing the extent to which a characteristic is heritable, they do not finger the particular genes at work.

虽然关于双胞胎的研究有助于确定一个性格征在大程度上能被遗传，但是这项研究并未指出到底是哪个基因起到了遗传作用。

Studies show that many people don't even have to have encountered a spider before being afraid of them, and that arachnid aversion is heritable, so there might be genetics at play.

研究表明之前甚至没有遇到蜘蛛也会害怕它们，并且对蜘蛛的厌恶实际上是可遗传的，所以可能有遗传因素在起作用。

The so-called photic sneeze reflex, AKA the Autosomal Cholinergic Helio-Ophthalmic Outburst, abbreviated" ACHOO" … yes, seriously… is experienced by about 1 in 4 people, leading scientists to believe it is genetically heritable.

所谓的“强光喷嚏反射”，又称常染色体胆碱能性赫里奥眼突出症，简称“Achoo”… 是的，讲真… 大约有四分之一的经历过，这使得科学家相认为它是会遗传的。

In “Genes, Economics and Happiness”, a working paper from the University of Zurich's Institute for Empirical Research in Economics, they conclude that about a third of the variation in people's happiness is heritable.

在苏黎世大学经济学实证研究院的一篇工作论文《基因、经济学与快乐》中，这些科学家们提出了以下结论：的幸福感约有三分之一是遗传的。

And there's a difference there too, because if we, you in the audience, or I, if we decide to have a designer baby, then their children will also be genetically modified, and so on, because it's heritable.

同时也会出现不同，因为如果我们，包括观众席中的你，还有站在台上的我，如果我们决定要一个订制婴儿，接着他们的孩子同样也会是基因改造的，并且一直持续，因为这是可遗传的。