MadSci Network: Genetics

Re: Identical twins, DNA testing, and murder

Date: Mon Jul 17 15:24:45 2000
Posted By: Jo Cocks, Undergraduate, Biology with Education, Cambridge
Area of science: Genetics
ID: 962146235.Ge

Identical twins have identical DNA so it would be impossible to tell which 
twin commited the murder. However the twins DNA will be different to 
everybody elses DNA so if there was blood (or even hair) left at the murder 
scene then DNA testing could prove that one of them commited the murder.

Hope this answers your question.

p.s. I hope this enquiry was just for interest and you are not an 
identical twin planning a murder!!

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