Learn More
Unambiguous examples of ecological causes of animal sexual dimorphism are rare. Here we present evidence for ecological causation of sexual dimorphism in the bill morphology of a hummingbird, the purple-throated carib. This hummingbird is the sole pollinator of two Heliconia species whose flowers correspond to the bills of either males or females. Each sex(More)
Within the endemic invertebrate faunas of hydrothermal vents, five biogeographic provinces are recognized. Invertebrates at two Indian Ocean vent fields (Kairei and Edmond) belong to a sixth province, despite ecological settings and invertebrate-bacterial symbioses similar to those of both western Pacific and Atlantic vents. Most organisms found at these(More)
AGAMOUS clade genes encode MADS box transcription factors that have been shown to play critical roles in many aspects of flower and fruit development in angiosperms. Tomato possesses two representatives of this lineage, TOMATO AGAMOUS (TAG1) and TOMATO AGAMOUS-LIKE1 (TAGL1), allowing for an analysis of diversification of function after gene duplication.(More)
Deep-sea Bathymodiolus mussels, depending on species and location, have the capacity to host sulfur-oxidizing (thiotrophic) and methanotrophic eubacteria in gill bacteriocytes, although little is known about the mussels' mode of symbiont acquisition. Previous studies of Bathymodiolus host and symbiont relationships have been based on collections of(More)
basis for exploring the macroevolutionary history of Earth and the origin of species. Finally, all these elements are nicely synthesized in a particularly readable chapter on human evolution and both our uniqueness from and our similarity to other species. A brief recap ofsome major areas of active research precedes two appendices, one of which adopts the(More)
Within the tomato MADS-box gene family, TOMATO AGAMOUS1 (TAG1) and ARLEQUIN/TOMATO AGAMOUS LIKE1 (hereafter referred to as TAGL1) are, respectively, members of the euAG and PLE lineages of the AGAMOUS clade. They perform crucial functions specifying stamen and carpel development in the flower and controlling late fruit development. To gain insight into the(More)
  • Irvin Pan
  • 2003
mildly offended that such a burgeoning, vast, complicated field could be summed up in "A Short Course." Moreover, having read Janeway et al.'s Immunobiology: The Immune Sytem in Health and Disease with zeal a few years back, I felt that no other text book could ever equal the clarity and extensiveness of Janeway's immunologi-cal bible. Having completed the(More)
  • 1