"Two University of Hawai`i at Manoa scientists have contributed to research that helps answer an evolutionary question about how early organisms developed a "through-gut," with separate orifices for a mouth and an opposite-end anus.
Mark Q. Martindale and Andreas Hejnol work at the
Kewalo Marine Lab in the Pacific Biosciences Research Center. The subjects of their research were acoel flatworms, which are easy to collect and raise at Kewalo, and which have been determined to be an evolutionary stepping stone in the development sequence for bilateral animals -- animals with a definite left and right side and a definite top and bottom -- such as humans."
[ More ]