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.
Prices there are roughly half of what they are in New York. Guatemala (index level: 80) was the most expensive Latin city; Sydney (106) in Oceania; Vancouver (96) in Canada; and Abidjian (89) in Africa. The United States is wooing foreign investment. The most affordable housing markets in the United States.