Life: The Science of Biology 11th Edition

Published by W. H. Freeman
ISBN 10: 1-31901-016-4
ISBN 13: 978-1-31901-016-4

Chapter 14 - From DNA to Protein: Gene Expression - 14.3 - DNA Is Transcribed to Produce RNA - 14.3 Recap - Learning Outcomes - Page 298: 3

Answer

The first 3 codons were determined in 1961 with simple artificial polynucleotides. Simple artificial mRNA are only three nucleotides long and correspond to a ribosome in order to assign the tRNA to a specific amino acid. There are 4 bases and 64 codons, including 3 stop codons, 1 start codon, as well as 20 amino acids.

Work Step by Step

The first 3 codons were determined in 1961 with simple artificial polynucleotides. Simple artificial mRNA are only three nucleotides long and correspond to a ribosome in order to assign the tRNA to a specific amino acid. There are 4 bases and 64 codons, including 3 stop codons, 1 start codon, as well as 20 amino acids.
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