Researchers working in Exuma and Eleuthera are puzzling over the Brown Anole lizard and its ability to choose the gender of its offspring.

Biologists from Dartmouth found that when limited to small mates, female lizards have less male offspring. This is a helpful for their survival, since researchers also found that males born to smaller fathers were less likely to survive than those born to bigger dads.

Biologist Bob Cox said the next step is how the lizard moms control the number of sons they have. "That's the big question at this point."

The study was published in the latest issue of Science Express, the advance online publication of the journal Science. Learn more about the research and The Bahamas projects here. Click here for photos.