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Twins, genes and environment

Some of the differences between us have nothing to do with our genes: tattoos or pierced ears, for example. Others, such as your eye colour, are almost entirely controlled by your genes. Many, like your size, are influenced by several genetic and non-genetic factors. Scientists can study twins to see how our genes and environment affect our appearance, health and behaviour.

Scientists can study twins to see how our genes and environment affect our appearance, health and behaviour.
Scientists can study twins to see how our genes and environment affect our appearance, health and behaviour.
T & P Hussey

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