Arrhenogeny

If monogeny is determined exclusively by a cytoplasmic factor, then it is easy to see that the factor will either die out (if it causes arrhenogeny) or will become fixed and thereby sterilize the population (if it causes thelygeny).

A male-biased brood free of endosymbiotes was found in the SO population. The way in which this arrhenogeny occurs is as yet unclear.

monogeny — the production of only male (“arrhenogeny”) or female (“thelygeny”) offspring.