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.
1. New York City, New York. New York City leads the pack as the most expensive city in the United States; the city, with a population exceeding 8.3 million, also tops lists of the worldâs most expensive cities. The cost of living in New York is a whopping 120% higher than the national average.