The Shortcuts Blog discusses British runner Mo Farah, his identical twin Hassan, the heritability of extreme performance: “Could Mo Farah’s talent have run in the family?”. The twins were raised apart after age 8.
But, he added, as kids "Mo and I were on a par as runners. Sometimes I would beat him, sometimes he would beat me. He has had the most technically advanced training and advice available in the world ... and I have had nothing. Who knows what I could have become? We could have been famous twin Olympic athletes."
I generally give my first Anthro 105 lecture on sport, and I think this is a great topic to spark discussion.