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.
Queens, the third borough in New York in America's 10 most expensive places to live, in 2012 had a cost of living index of 148.3. The indexes of all three sections of the Greater New York metropolitan area rose from the previous year. Staten Island and the Bronx make up the rest of New York City.