The sequence of bases on DNA codes for the sequence of amino acids in proteins. But there are 20 different amino acids and only 4 different bases, so the bases are read in groups of 3. This gives 64 combinations, more than enough to code for 20 amino acids.
10 cheapest places to live in the U.S. Ashland, Ohio, ranks as the 10th most affordable city in the U.S., according to the Council for Community and Economic Research. Ashland has a cost of living index of 87.6.
Americans are moving to places with affordable costs of living and strong labor markets (or good retirement communities). The top destination states of 2015 could hardly be more different geographically and culturally: Oregon and South Carolina. What they have in common is that both states are relatively affordable places to live.