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.
Livability puts out their top 10 most affordable cities in the US each year, providing some great information for families who are looking for a cheaper, yet very livable place to move to. Livability explores what makes small-to-medium sized cities great places to live.