The Genetic Gamesmanship of a Seven-Sexed Creature What could be better than two types of sexes? For one organism, the answer isn’t three, but seven! And to top it off, these seven sexes aren’t evenly distributed in a population, although researchers have now developed a mathematical model that can accurately estimate the probabilities in this crap-shoot game of sexual determination. Meet Tetrahymena thermophila, which in addition to its seven different sexes—conveniently named I, II, III, IV, V, VI, and VII—has such a complex sex life that it requires an extra nucleus.
Tree of Life Web Project The Tree of Life Web Project (ToL) is a collaborative effort of biologists and nature enthusiasts from around the world. On more than 10,000 World Wide Web pages, the project provides information about biodiversity, the characteristics of different groups of organisms, and their evolutionary history (phylogeny). Each page contains information about a particular group, e.g., salamanders, segmented worms, phlox flowers, tyrannosaurs, euglenids, Heliconius butterflies, club fungi, or the vampire squid. ToL pages are linked one to another hierarchically, in the form of the evolutionary tree of life. Starting with the root of all Life on Earth and moving out along diverging branches to individual species, the structure of the ToL project thus illustrates the genetic connections between all living things.
Science Sites for Kids Amusement Park Physics Explores how the laws of physics play a role in the design of amusement park rides. Design a roller coaster, determine the outcome of bumper car collisions, and more. Ask Dr. Universe How do chameleons change color? When was the light bulb invented? Why can't cats and dogs be friends? Scientists Uncover How Dainty Rhino Feet Support Huge Bodies How do rhinos' dainty little pigeon-toed feet support their portly bodies? A group of veterinary scientists in the United Kingdom are on the case. By coaxing three white rhinos to walk back and forth across a "pressure pad," a floor mat embedded with thousands of pressure sensors, the researchers are collecting data on how much force the beasts exert on different parts of their feet as they walk.
See-through caterpillar This jewel caterpillar (acraga coa) is dressed to perfection. Gerardo Aizpuru spotted it in a mangrove area on the Yucatán peninsula. Photo take in a mangrove area, found this Stoning translucent caterpillar lay on a Red Mangrove tree leaf this morning early. Science Education - Research & Training - NIH NIH Home > Research & Training Resources for Students Featured Site: NIAMS Kids Pages Your childhood and teen years are a prime time to learn habits that will help you keep your bones, joints, muscles, and skin healthy for years to come. Resources for Educators Science Education Partnership Award (SEPA)
Preschool science activities How to nurture your child's interest in the natural world © 2008 -2012 Gwen Dewar, Ph.D., all rights reserved Can we design better preschool science activities? Introduction to Evolutionary Biology Introduction to Evolutionary Biology Version 2 Copyright © 1996-1997 by Chris Colby[Last Update: January 7, 1996] volution is the cornerstone of modern biology. It unites all the fields of biology under one theoretical umbrella. Jewel-like or see-through caterpillars are amazing gifts from mother nature Here's photos of the Jewel Caterpillar (Acraga coa), snapped by photographer Gerardo Aizpuru near Cancun, and submitted to Project Noah. "Photo take in a mangrove area , found this Stoning translucent caterpillar lay on a Red Mangrove tree leaf this morning early. Just can believe there is some species like this around the world. looks like made of glass whit small red mushroom inside every pic. about 3 cm long." The jewel-like caterpillar transforms into this brightly coloured furry moth
Rare and Precious Moments of Animal Life How interesting can animal life be is something which we can only guess. By looking these amazing photographs it seems that they have very funny and precious moments. Would you like to be monkey, or elephant, or maybe cat sometimes? Don’t worry if you do because this has happened all of us at least ones, for now enjoy these rare photos!