jan 1, 2002 - 2002: Mouse is the first mammal to have its genome decoded

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In 2002, scientists took their next big step and decoded the genome of the first mammal – the mouse. The achievement allowed them to compare, for the first time, the human genome with that of another mammal.

Amazingly, it emerged that 90% of the mouse's genome could be aligned with the corresponding regions on the human genome. Both the mouse and human genome also contained around 30,000 protein-coding genes. These discoveries highlighted for the first time just how closely mammalian species were genetically related.

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