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DNA
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: [[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===
: 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]].
==Key Stage 4==
===Meaning===
[[DNA]] is a [[polymer]] made of [[Nuclei Acid|nucleic acids]] which provides instructions for the structure and behaviour of an [[organism]].
===About DNA===
: [[DNA]] stands for '''deoxyribose nucleic acid'''.
: [[DNA]] is found in the [[nucleus]] of [[Eukaryotic Cell|eukaryote]]s and floating freely in the [[cytoplasm]] of [[Prokaryotic Cell|prokaryote]]s.
: [[DNA]] in [[eukarytotic Cell|eukaryotes]] coils together to make [[chromosomes]].
: [[DNA]] is passed from parent to [[offspring]].
: [[DNA]] is made of [[gene]]s that control 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.