I absolutely love Wolbachia. I did some work with Wolbachia in theoretical biology a long, long time ago. They're usually only transmitted maternally and diffe

I absolutely love Wolbachia. I did some work with Wolbachia in theoretical biology a long, long time ago. They're usually only transmitted maternally and different strains came up with different strategies to maximise Wolbachia offspring: some strains prevent male offspring from developing, some strains prevent reproduction with Wolbachia-uninfected females so the infected males have only offspring with infected females! You can make models of Wolbachia population spread with these strategies forever and ever :)