The theory of neutral evolution is supported by the observation that most changes in codons occur in the third position within the codon,which often has no effect on the sequence of amino acids in the protein.

Question

Quizplus · Accepted Answer

The theory of neutral evolution proposes that most genetic changes are neutral and have no effect on an organism's fitness. This theory is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein. Therefore, option A is correct.

The Theory of Neutral Evolution Is Supported by the Observation