Question submitted to DNA Day by students at West Kildonan Collegiate in Winnipeg, Manitoba. Learn more from Dennis.

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Question submitted to DNA Day by students at St. Lewis Academy in St. Lewis, Labrador. Learn more from Thomas.

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The DNA of identical twins is identical, which makes it impossible to determine which twin was present at a crime scene using a DNA test.

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DNA Day experts answer your questions about the genetics of twins . Learn More about DNA Day.

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DNA Day experts answer your questions about extra chromosomes. Learn More about DNA Day.

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