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Practice Listening: Fill in the Blanks (Type In)
ID: #906
Short
Biomedical researchers
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To biomedical researchers all over the world, twins offer a opportunity to untangle the influence of genes and environment – of nature and . Because identical twins come from a single fertilised egg that splits into two, they share virtually the same genetic . Any differences between them – one twin having younger looking skin, for example – must be due to environmental such as less time spent in the sun.
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