2005 National DNA Day Online Chatroom Transcript
This is just one question from an archive of the National DNA Day Moderated Chat held in April 2005. The NHGRI Director and many genomics experts from across NHGRI took questions from students, teachers and the general public on topics ranging from basic genomic research, to the genetic basis of disease, to ethical questions about genetic privacy.
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Assuming that you are a conjoined twin, and you share a same organ, would you have the same DNA or would they be separated? If so, how is it they don't alwys look the same?
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Don Hadley, M.S., C.G.C.: Cojoined twins are identical twins that did not completely separate, therefore, they share their DNA. However, a persons appearance is affected by other factors beside genetics and, therefore, identical twins may have physical differences that result from non-genetic factors such as mechanical pressures inside the mother's womb. |
| Allie Brianna Austin Indiana! |
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