Monday, September 14, 2009

The Miracle of Life

In lectures on human genetics, I explained to my college students that males determine the sex of the offspring by contributing either an X or a Y chromosome. So at the end of the year, I put it on the final exam: "How is the sex of the child determined?"

 

One student wrote, "By examining it at birth."

 

-- Patricia Gindhart

 

 

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