"Difference Between a Testis and an Ovary,"
R.V. Short, Journal of Experimental Zoology, vol. 281,
no. 5, August 1998, pp. 359-61.
INVESTIGATOR BRIAN FIES:
After eons of fumbling about
Short's findings removed any doubt.
To tell ov'ry from testis
The test that works best is
To see if it's inside or out.