You find two closely related species of fly, one (P) of which appears to reproduce parthenogenetically (a form of asexual reproduction) while the other (S) reproduces sexually. In the same location, I...

Extracted text: You find two closely related species of fly, one (P) of which appears to reproduce parthenogenetically (a form of asexual reproduction) while the other (S) reproduces sexually. In the same location, I find a third kind of insect, a sterile defensive form with enlarged mandibles. Because it is sterile, I conclude this form must be produced by either P or S. Which do you think is most likely the producer of the sterile defensive individuals? Answer: