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

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Episode 2

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

Sun 4 Oct 2009 22:20 BBC One Scotland only

See all previous episodes from The Secret Life of Twins

  • Photo: Mia and Alexandra

    Photo: Mia and Alexandra

  • Photo: Chris and Xand

    Photo: Chris and Xand

  • Photo: Miia and Noora

    Photo: Miia and Noora

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