The Research Institute set includes an astronomer, a paleontologist, and a chemist -- all female.

LEGO Realizes There Are Female Scientists

It would seem that all is possible in the mix-and-match world of LEGO, but if anyone wanted to have a female scientist LEGO minifig, you had to build it from the base of a male scientist character. But as a result of widespread support for a proposal from a female geochemist/LEGO fan, the company has come to the realization that a Y chromosome — even a plastic one — is not needed to do science stuff. [More]