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The city's elevation, as measured at Logan International Airport, is 19 ft (5.8 m) above sea level. [111] The highest point in Boston is Bellevue Hill at 330 ft (100 m) above sea level, and the lowest point is at sea level. [112] The city is adjacent to Boston Harbor, an arm of Massachusetts Bay, and by extension, the Atlantic Ocean.
The modern study of genetics at the level of DNA is known as molecular genetics. In 1972, Walter Fiers and his team were the first to determine the sequence of a gene: that of bacteriophage MS2 coat protein. [ 44 ]