http://www.leigh.org/genealogy/DNA/dnarelatives.html
http://en.wikipedia.org/wiki/DNA#Forensics
http://tc.engr.wisc.edu/UER/uer96/author9/index.html
http://www.accessexcellence.org/RC/VL/GG/structure.php
http://www.blc.arizona.edu/Molecular_Graphics/DNA_Structure/DNA_Tutorial.HTML
http://nobelprize.org/educational_games/medicine/dna_double_helix/readmore.html
http://www.rothamsted.bbsrc.ac.uk/notebook/courses/guide/dnast.htm
http://porpax.bio.miami.edu/~cmallery/150/gene/DNAdiscovery.htm
http://nobelprize.org/nobel_prizes/medicine/laureates/1962/crick-bio.html