Multiple sex determining factors have been found in natural populations of the housefly,
Musca domestica. Their distribution seems to follow a geographical cline. The" standard" …

Caicedo, AL, Stinchcombe, JR, Olsen, KM, Schmitt, J. and Purugganan, MD (2004). Epistatic
interaction between Arabidopsis FRI and FLC flowering time genes generates a latitudinal …