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AQA Biology genes and the triplet code question help
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sushma_roberts
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Hi why is the answer 64?
'The genetic code uses four different DNA bases. What is the maximum number of different DNA triplets that can be made using these four bases?'
'The genetic code uses four different DNA bases. What is the maximum number of different DNA triplets that can be made using these four bases?'
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Envionic
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ahmettwo
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Each base pair has 4 possible variations, and there are three base pairs, then you do 4 * 4 * 4 (or 4^3) which is 64 possible triplets which can be coded for
Hope I helped
Hope I helped
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LiiHyde
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(Original post by sushma_roberts)
Hi why is the answer 64?
'The genetic code uses four different DNA bases. What is the maximum number of different DNA triplets that can be made using these four bases?'
Hi why is the answer 64?
'The genetic code uses four different DNA bases. What is the maximum number of different DNA triplets that can be made using these four bases?'
So you do 43 and that gives you 64 combinations of code which meets the requirement for the 20 amino acids and allows the code to be degenerative as multiple triplets can code for the same amino acid.
Hope that helps
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