article_snippet.sent: Twins were all born in the UK and were broadly representative of the UK population.
article_snippet.sent: Twins provide a unique natural experiment for research.
article_snippet.sent: Identical twins share 100 per cent of Identical twins genes, while non-identical twins - like non-twin siblings - share about 50 per cent.
article_snippet.sent: Both identical and non-identical twins normally share the same environment while growing up.
article_snippet.sent: Twin studies are useful for exploring whether a trait is forged in the genes, passed down or by the environment a person is living in.
article_snippet.sent: As identical twins share exactly the same DNA, traits produced by genes should appear in identical twins.
article_snippet.sent: However in non-identical twins the DNA will not be the same and so differences can occur.
article_snippet.sent: In most cases twins should have shared the same environment when growing up too.
article_snippet.sent: So by comparing the differences and similarities between identical and non-identical twins it may be possible to unravel whether a trait is environmental or cultural.
article_snippet.sent: However, as Twins grow up Twins can be influenced by different groups of friends, cultural experiences and points of view.
article_snippet.sent: By comparing the differences and similarities between the study of twins the study of twins said the study of twins can identify how much of a quirk, disease, or trait is due to a genetic predisposition or environmental and cultural factors.
article_snippet.sent: the study of twins analysed surveys completed by 2,355 twins (comprising responses from 612 full pairs) in March 2015 between the ages of 18 and 80 - most of whom were middle aged.
article_snippet.sent: These latest results from UK data analysed surveys completed by 2,355 twins in March 2015 between the ages of 18 and 80 - most of whom were middle aged.