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The Secret Life of Twins

Two-part series that looks at some of the most fascinating identical twins in the world.

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by year (2)

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Episode 2

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Broadcast Sun, 4 Oct 2009, 22:20 on BBC One (Scotland only) but not available on BBC iPlayer.

2/2. How twins are helping scientists to explore the possible genetic basis of sexuality.

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Photo: Mia and Alexandra

Photo: Chris and Xand

Photo: Miia and Noora

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