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.
The Most Expensive Cities in the World to Live. A stronger dollar has propelled New York and Los Angeles into an annual ranking of the worldâs 10 most expensive cities. Singapore took the top spot in the ranking from the Economist Intelligence Unit for the third straight year, followed by Zurich and Hong Kong.