Biology: Genes, DNA, and Inheritance

Artistic rendering of a DNA strand with particle effects against a dark background.

DNA Is Life's Information Archive

Genes are sections of DNA that carry instructions for an organism's form or function. Biology changed when scientists realized DNA stores hereditary information.

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The Double Helix Twist

DNA is made of two long strands coiled into a double helix. In eukaryotes, it sits mainly in the nucleus. In prokaryotes, it is held in the nucleoid.

Biology: Genes, DNA, and Inheritance

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