There are 64 combinations of three bases and I only need to describe 20, so there's combinations to spare.

三个一组的碱基产生六十四种组合,而我只需对应二十种氨基酸,所以一种氨基酸会对应不同密码子

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How many combinations of codons are there if there's three bases and four possibilities at each base?

那密码子的组合方式到底有几种呢,三个位点,每个位点四种选择

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There's just more sequences in a three unit codon than I need for the amino acids.

一个氨基酸对应不止一个密码子,由三碱基所构成的密码子

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One of them has the right sequence of codons to specify the amino acid sequence of the protein, and the other one has a complimentary sequence.

该段带有正确的密码子序列,能够指导氨基酸序列合成蛋白质,另一段则是它的互补序列

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If I only had two per codon I wouldn't have enough.

所以如果每个密码子只有两个碱基不够

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This is the codon, this is the anti-codon, there's only one anti-codon that matches this one and that anti-codon is always - occurs in a molecule that has leucine attached to the other side.

这是密码子,这是反密码子,只有一个反密码子与之对应,而反密码子的另一端,总是携带着一个亮氨酸

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Why are there three bases in a codon?

为什么一个密码子有三个碱基呢

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That creates a problem in the genetic code in that there's 64 possible sequences but there's only 20 some amino acids, so each amino acid can be specified by more than one codon.

这里有个问题,遗传密码有六十四种可能的序列,而只有二十种氨基酸,因此每种氨基酸都有,不止一种密码子与之对应

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You know that messenger RNA is read in three base units called codons, and so this particular piece of messenger RNA is drawn in this cartoon in three base pair units.

RNA是按每三个碱基组成一个密码子,进行翻译的,在这幅动画中所画的mRNA,就是按三个碱基一组的方式来描绘的

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