Jenny writes: “I’m nearing the end of getting my undergrad in Zoology and I decided to do something to commemorate it. I like the simplicity of a Punnett square and I like that such complicated theories that make up Mendelian genetics can be illustrated in 6 lines and 12 letters. And since the letters are ambiguous I decided to go for ‘E’ for my last initial.”
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Originally published October 18, 2008. Copyright 2008 Carl Zimmer.