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: [[DNA ]] is found in the [[nucleus]].: [[DNA ]] coils together to make [[chromosomes]].: [[DNA ]] is passed from parent to [[offspring]].: [[DNA ]] controls most of our physical appearance.: [[DNA ]] determines your eye colour, nose shape, height, skin colour and whether you are [[male]] or [[female]]. All of these things can be affected by environment as well, but the [[DNA ]] provides the original instructions on how to build you.: [[DNA]] has a '''double helix''' structure, which means it is shaped like twisted ladder. ===Discovery of DNA===: [[DNA]] was first discovered in 1869, but at the time nobody knew how it worked or what its structure was.: In 1928 an experiment with [[DNA]] showed that it was responsible for [[heredity]].: IN 1953 Francis Crick and James Watson found evidence that [[DNA]] was a long double helix [[molecule]].