Curious Nature http://curiousnature.info Articles about puzzles of nature ... en-us Curious Nature: Spider mite males have no fathers, but they do have grandfathers ... http://curiousnature.info/A1-spidermite.html Some animals are haplodiploid, where males have only one set of chromosomes and females have two. How this works ... Curious Nature: Pillbugs and Wolbachia bacteria that alter the sex of hosts ... http://curiousnature.info/A1-Pillbug.html Wolbachia bacteria can change the sex of their pillbug hosts from male to female. And in the long term, make pillbugs depended on the bacteria for reproduction ...