Gap Fill - Identical Twins - Level 5


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   behaviour      characteristics      difference      factors      genes      genetic      number      one      trait      versus  

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The study shows that in about 15 per cent of identical twins, twin carried a "substantial" of mutations that the other did not have. This is important as it sheds light on the "nature nurture" debate. This is whether human is caused by socializing and upbringing, or by a person's . The research shows that this tiny difference, and not environmental , could be the reason for different behavioural or medical conditions. A professor said a mutation may be the source of a disease or .

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