• Question: why is one sister got brown hair and the other blonde if they have the same parents

    Asked by chiara728 to Ed, Sam, Steve on 23 Jun 2011.
    • Photo: Sam Tazzyman

      Sam Tazzyman answered on 23 Jun 2011:

      This is due to genetics. Each sister gets half their Mum’s genes and half their Dad’s genes. The combination will be different for both, and so the hair colour can be different for both. The only time siblings have the same genes is when they are identical twins.

    • Photo: Ed Morrison

      Ed Morrison answered on 23 Jun 2011:

      Does one of them dye her hair?

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