Extinction events

Brian Wei Bio-X Make-up Work Billy Lee Dr. Jin Billy Lee is a professor of Genetics with a particular interest not in the DNA genome, but in RNA variation and its phenotypic effects. He is especially interested in the phenomenon of post-transcriptional RNA editing and its function. RNA editing has been demonstrated to be necessary for proper development and function, but its role is not well understood. The first paper, “Cis Regulatory Effects on A-to-I RNA Editing in Related Drosophila Species

Should Research on De-extinction and Cloning be continued? Have you ever imagined how it would feel when extinct species, like woolly mammoths and passenger pigeons, are brought back to the Earth? How would it be like to revive long dead species? Obviously, many would imagine it to be amusing and fascinating. There are numerous discussions ongoing that address the prospect as well as the impacts of de-extinction and cloning. I believe that de-extinction and cloning, though seem fascinating at first

From the presentation the 6th mass extinction: 1. Describe what biodiversity is and why biodiversity is so important. Biodiversity is the variety of spices within plants and animals in the environment, it is an indicator of ecosystem health. The importance of biodiversity: Biodiversity provides humans with food and materials (like wood) that benefiting the economy. Biodiversity performs a variety of ecological services: from absorbing chemicals to cleaning water and providing oxygen. Some types

Ocean Acidification and the Permian-Triassic Extinction Event Ocean Acidification In current times, as we consider ways to inhibit CO2 emissions, we look towards the Earth’s natural carbon sinks as possible solutions. Carbon sinks an environment that can hold onto carbon chemicals for an indefinite time with the act of removing carbon dioxide from the atmosphere defined as carbon sequestration. The Oceans are one of them. However, when the amount of atmospheric carbon dioxide elevates in a short

The bioregion of the Slate Belt is in the northeastern most corner of Northampton County Pennsylvania. This bioregion is unique to others in the region due to the Martinsville Shale deposits. These deposits contain high quality slate that when quarried and sold on the market, lead the industry in the United State for over 100 years. The industry in the south valley consists of cement plants due to rich limestone deposits and abandoned iron mines in the west for the now defunct Bethlehem Steel. To

dinosaurs is an event in history that is still being debated today. There are different theories that try to explain the extinction, but the two theories that have been most accepted are the asteroid impact theory and the volcanism theory (Ducharme). One major theory explaining the disappearance of dinosaurs is the Alvarez hypothesis, or the asteroid impact theory. Walter Alvarez and his father discovered an atypical large clay layer at the K-T boundary, or the event of the extinction of dinosaurs

The K-Pg event, the day life on earth was wiped out, is one of the most notorious extinctions in the history of the world. From jawed fish, to plants, to crocodyliforms (10 species’ fossils have been found, 5 of which are extinct), even a species of pterosaurs, life was extinguished; however, what happened to the creatures? What truly killed the dinosaurs? There are many theories but some ideas are downright insane. Some older ideas consist of comets dusting the Earth with a poisonous gas, or the

discovery that may serve as a marker of an event is microspherules. A variety of microsherules have been discovered in the PTB layers of the Meishan section (Xu et al., 1989). The origin of the microspherules could be multiple. They are small circular indentations in the rocks and the most abondent elements are Si or Si-Al. Mircospherules are similar to cosmic dust. Since a large amount of microspherules occurs in a thin layer of PTB layer it can serve as another event marker.<br><br>Maxwell (1989) who got

Review of Literature Issue: The rapid increase in the extinction rate of plant and animal species has proven to be a massive issue regarding biodiversity loss. Anil Markandya, from the Basque center for Climate Change and author of The Economic Feedbacks of Loss of Biodiversity and Ecosystems Services says, Globally, terrestrial biodiversity is projected to decrease by a further 10% by 2050. As with biodiversity, the planet has also experienced major losses in the services derived from ecosystems

life of the animal. The morphology and habit of the goniatites, compared to the ammonites, are alike. For example, both swim freely and have heads with two well developed eyes and arms (or tentacles). Survived the Late Devonian extinction. (One of five major extinction events in Earth's history) The shell of a Goniatite is always coiled in a planispiral structure. According to the shape of its shell, this order was thought to be poor swimmers. Prolecanitida An order of ammonoid cephalopods that are