Biology 8.2 the triplet code

Charlotte Hewson
Flashcards by Charlotte Hewson, updated more than 1 year ago
Charlotte Hewson
Created by Charlotte Hewson over 6 years ago


AS - Level AS Biology (unit 2 - 08. DNA and meiosis) Flashcards on Biology 8.2 the triplet code, created by Charlotte Hewson on 03/24/2015.

Resource summary

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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