Molecular Biology of the Gene 7th Edition by Richard Losick, James Watson, Michael Levine, Tamara Baker, Alexander Gann

Exercise 13

A mutation that occurs in DNA can cause an amino acid substitution in the encoded protein. Amino acid substitutions are described as conservative when the amino acid in the mutated protein has chemical properties similar to those of the amino acid it has replaced. Referring to Figure 6-2, identify four different examples of pairs of amino acids that could be involved in conservative substitutions.