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Description
Flashcards by Charlotte Hewson, updated more than 1 year ago
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Created by Charlotte Hewson
almost 11 years ago
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| Question | Answer |
| what is a gene? | a section of DNA made of a specific sequence of bases that determines a polypeptide. |
| what is a polypeptide? | a sequence of amino acids |
| how many bases code for one amino acid? | 3 |
| how many amino acids regularly occur in proteins? | 20 |
| why did scientists decide three bases code for each amino acid? | three bases produce 64 different codes, where as if they were in pairs, then only 16 different codes are possible and 20 is the normal. |
| what are the sections called that dont code for amino acids? | introns |
| what is the section called that does code for an amino acid? | intron |
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