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We all have two biological parents but in the future if someone from the UK tells you they have three parents, it might be true.
我们都有两个亲生父母，但是在未来，如果有一个英国人告诉你，他有三个亲生父母，这有可能是真的。
That’s right. This is because the UK has become the first country to approve laws allowing the creation of babies with DNA from three people! DNA is the chemical structure present in the centre of a cell which defines somebody’s characteristics.This is to fight a particular disease.
没错。这是因为英国成为第一个支持从三个人身上获取DNA孕育婴儿的国家。DNA是细胞中的化学结构，决定一个人的特点。这是为了抵御一种特殊的疾病。
Yes. Sometimes parts of the DNA called genes are faulty; it means they don’t work properly and this might cause problems later on. A new technique will allow some of these genes to be replaced by healthy ones from a third person.
是的。有时候，部分DNA，也就是基因是有缺陷的。这意味着他们不能正常运作，之后也许会造成某些问题。最新的技术可以从第三人那里获取健康的基因，替代这部分运作不良的基因。
This practice is controversial – people argue about it.They fear we’re going to mess with nature and end up with a Frankenstein’s monster!
这项举动备受争议，人们对此持有不同的意见。他们害怕这项技术会打乱自然规律，造出“科学怪人”。
Wow, that would be frightening, let’s hope it doesn’t happen! Well, in this programme we’re talking about the three-parent baby and you’re going to learn some vocabulary related to reproduction.
哇，那是挺可怕的。希望这不会发生！在今天的节目中，我们要谈论拥有三个父母的婴儿，你也会学到一些跟繁殖有关的新单词。
Genetics – the science of how living creatures pass their characteristics to their offspring – is fascinating, Neil!
遗传学，也就是研究生物将他们的特性传给下一代的科学，它太神奇了。
It is fascinating, and you know what I find most surprising, Harry? It’s how much DNA we have in common with other living creatures.
是很神奇，你知道我觉得什么最不可思议吗？是我们的DNA和其他生物的DNA有很多的相似之处。
I’ve heard that a very high percentage of our DNA is similar to the DNA of monkeys.
我听说我们的DNA和猴子的DNA相似度很大。
The comparison with monkeys is easy. Over 95% of our DNA is identical to theirs. But what you might not know is… how much of our DNA is similar to the DNA in a banana?
和猴子比很容易。我们DNA与猴子的相似度高达95%。但是你可能不知道的是......你知道我们的DNA和香蕉的相似度是多少吗？
A banana?!
一个香蕉？！
Yes. And that’s my quiz question today. What percentage of our DNA is similar to that of a banana? Is it:a) About 1%b) About 20% orc) About 50%
是的。这是今天的问题。我们的DNA和香蕉的相似度是多少？a) 1%左右b) 20% 左右c) 50%左右
I think we have very little in common with bananas so I’m gonna go for 1%.
我认为相似度很小，所以我选1%。
Well, I’ll give you the correct answer at the end of the programme. Now let’s talk about the three-parent baby. A pioneering technique, in other words, a technique never used before, has been developed by scientists in Newcastle University here in the UK. 

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