Not to rain on what this kid did but the reporting is terrible. He didn't prove that he and is brother have the same fathers. He just showed his brother had the markers for red headedness.
To show that it is possible that they have the same father they would have had to test his fathers DNA to ensure that he has the recessive gene for red headed ness or if his father is a ginger he would have to show that he had the recessive gene for read headedness passed on from his father and even then that would only limit the pool of possible fathers. Further comparison and sequencing would be necessary.
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