| Learning | September 3, 2013

(The class is introductory biology, and the subject is genetics.)

Teacher: “Can anyone tell me what letters we use to show the sequence of genetic code?”

(The class is silent.)

Teacher: “Come on, I know you read this. What letters make up DNA?”

(The class is still silent.)

Teacher: “Well, one’s ‘A’…”

Student: “OH! Also ‘D’ and ‘N,’ duh!”

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