The family tree business

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What can you really learn about your heritage from a home DNA testing kit? We hear from Bill and Ylva Wires, a couple in Berlin who used DNA testing kits to find out more about their ancestors. Manuela Saragosa speaks to Rafi Mendelsohn of MyHeritage.com - one major company in this field - and Kristen V Brown who covers genetics stories for Bloomberg. Producer: Laurence Knight (Photo: Old family photos, Credit: Getty Images)