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.
Letâs get one thing clear from the outset: These are not the least expensive places to live in America. There are places where you can buy a home for pocket change, and whole towns that cost less than a home in Palo Alto, Calif. But if you ask the question âWould you want to live there?â, the answer is likely âNo.â Instead, this is a list of affordable cities youâd actually want to live in.