Love this, just the kind of thing I idly think about when I should be sleeping!
We had a visitor pose a very good question today in our lab. She and her child were doing the table activity to determine which of two twins has a peanut allergy. Her question to us was:
Would identical twins both have the peanut allergy since they share the same DNA?
For certain, fraternal twins, who develop from two different eggs, have different DNA and hence there is a good chance they do not have the same allergies. However, given that allergies have a strong genetic component, it seemed entirely likely that identical twins would share the same allergies.
A quick search of some articles showed that the answer is not as clear-cut as that though.
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