Imagine you have a 3.1 kb fragment of DNA. In one tube you digest it with PstI and run the resulting DNA on a gel, seeing a 2.0 kb and a 1.1 kb band. In another tube you cut the fragment with HindIII and get three bands: 1.5 kb, 1.3 kb, and 0.3 kb. In a third tube you cut the fragment with both enzymes and get bands of 1.5 kb, 0.8 kb, 0.5 kb, and 0.3 kb. Draw a map of the 3.1 kb fragment, labelled with each restriction enzyme cut site.