Concept 19 The DNA molecule is shaped like a twisted ladder. Earlier work had shown that DNA is composed of building blocks called nucleotides consisting of a deoxyribose sugar, a phosphate group, and one of four nitrogen bases â adenine (A), thymine (T), guanine (G), and cytosine (C).-ray crystallography provided the final clue that the DNA molecule is a double helix, shaped like a twisted ladder. In 1953, the race to determine how these pieces fit together in a three-dimensional structure was won by James Watson and Francis Crick at the Cavendish Laboratory in Cambridge, England.
The Indianapolis International Airport is located off I-70 via exit 68, just five minutes west of I-465. 7800 Col. H. Weir Cook Memorial Drive. Indianapolis, IN 46241.
Indianapolis, Indiana, Airports. Indianapolis International Airport (IND / KIND) Indianapolis, Indiana, Information. Located in the middle of the state, the city of Indianapolis is a crossroads and has numerous Interstates highways pass through it. Indianapolis is the 12th largest city in the U.S.A. It is serviced by one major airport, Indianapolis International Airport.