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.
With a cost of living index of 178.6, Brooklyn, New York, ranks as the second most expensive place to live in the U.S. The Council for Community and Economic Research has ranked the birthplace of Barbra Streisand as the second most expensive city in the U.S. every year since 2007.