Dna: The Genetic Code

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C h e m g u id e – q u e s t i o n s
DNA: THE GENETIC CODE
1. The table below (taken from the Chemguide page) shows the three-base combinations used to code
for the various amino acids in messenger RNA chains.
a) What three letter combinations code for lysine (Lys) in a messenger RNA chain?
b) What three letter combinations code for glycine (Gly) in a DNA chain?
c) The messenger RNA code below is for a small part of a polypeptide chain. Identify the amino
acid sequence in this part of the polypeptide chain.
UCUAAUGCAUUGACCUCUCGUUAG

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