The Cancer Gene That Lurks Inside All Of Us

Inside every cell in every human body, there's a very special gene, called BRCA1, that regulates how fast cells can divide. A simple mutation within it can be all that's required for us to develop cancer.

BRCA1 — the short name for 'breast cancer 1, early onset' — is essentially a tumour suppressor: when it functions correctly, it controls the rate of replication of cells; when it goes wrong, cells can reproduce way faster, which is the fundamental way that cancer tumours grow. This video explains how BRCA1 works — or doesn't. [TED-Ed]

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