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3) S. Schreiber realized that he was only half brother with his brother, by noticing that...

3) S. Schreiber realized that he was only half brother with his brother, by noticing that they only have 25% identical DNA. (4 points)

a. How much identical DNA would he expect for his full brother? Why?

b. How to find out for sure if he and his brother have the same father?

c. How to find out for sure if he and his brother have the same mother?

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