Discrimination?
Draw simple labor supply and demand graphs for the occupations of nurses and surgeons to show the labor market in each profession. Assume that some workers prefer to do surgery for a living, and some prefer to work as nurses, but that all will change occupations if the wages are high enough.
Now assume that men face discrimination that prevents them from becoming surgeons; show and explain the effect of this discrimination on wages and labor supply in both occupations graphically and in your own words.