In early spring, Dr. Tom Wilson notices that there is an equal distribution of long and short stemmed buttercups in the vacant lot across the street from his house as well as in his own backyard. In late summer he notices that there are mostly long stemmed buttercups in the […]

The bacterial protein called flagellin (molecular weight 40,000 g/mol) has been used to calculate the accuracy of protein synthesis. Flagellin offers two advantages, it can be easily obtained as a pure fraction and it contains no cysteine, thereby allowing a sensitive measure of the misincorporation of cysteine into the protein. […]

Question: Magnetic field reversals (as represented in the figure above) have been occurring roughly every 200,000 years. If you were to observe iron crystals embedded in oceanic geology that were pointing neither northward or southward, based on plate tectonic theory, what would potentially explain this?Question: Which piece(s) of evidence offer support of […]

Species that are more prone to certain risk factors are more likely than others to become extinct. For example, species with a unique lineagen such as the giant panda, are likely to be at severe rsik for extinction. SOme argue that high risk species are less successful products of evolution […]