IELTS READING – Research using twins S4AT1

IELTS Simulator / IELTS Simulation READING TEST SET 4 AC: RESEARCH USING TWINS. To biomedical researchers all over the world, twins offer a precious...
IELTS READING

Research using twins

To biomedical researchers all over the world, twins offer a precious opportunity to untangle the influence of genes and the environment – of nature and nurture. Because identical twins come from a single fertilized egg that splits into two, they share virtually the same genetic code. Q1 Any differences between them -one twin having younger looking skin, for example – must be due to environmental factors such as less time spent in the sun.

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