The Biology Brain Teaser
Are you ready for a challenge? Look at the picture below and find the mistake.

This is a screenshot from the TIAA-CREF web site. Take a good look and find out what is wrong with it.
Email your answer to this address using "Biology Brain Teaser" as your subject line.
The deadline for your submissions is Monday, May 12, 2008.
From among all correct answers, one grand-prize winner will be drawn, who will receive a free one-year subscription to the "sci-tech news" (Southeastern's annual publication of the College of Science and Technology).
Good Luck!
Value of the grand prize is 1/100 of a cent and can not be redeemed in cash.