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Peppered Moth Simulation

Peppered Moth Simulation
Name:______________________________________________ Objective: Simulate changes in moth population due to pollution and predation, and observe how species can change over time. Introduction: Charles Darwin accumulated a tremendous collection of facts to support the theory of evolution by natural selection. One of his difficulties in demonstrating the theory, however, was the lack of an example of evolution over a short period of time, which could be observed as it was taking place in nature. Although Darwin was unaware of it, remarkable examples of evolution, which might have helped to persuade people of his theory, were in the countryside of his native England. The economic changes known as the industrial revolution began in the middle of the eighteenth century. Instructions: Click the link below to read more information on Kettlewell's study of moths. After 5 minutes record the % of dark moths and light moths - you will need this information later. Data and Analysis 1. 2. 3. 4. 5. 6. 7.

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DNA . Genetics In the 150 years since Mendel's first experiments, geneticists have discovered that genetic traits usually don't follow simple inheritance patterns. Some traits, like human eye color and stature, are produced by the interplay of many sets of genes; these are known as "polygenic traits." Other traits show a phenomenon called intermediate expression, in which a heterozygous genotype will produce a phenotype that's different from homozygous dominant genotypes. BioPhotons ~ Secrets of the Human Energy Field Revealed! Leading Russian Scientists believe we have the power to influence the world around us through our energetic fields, and now they have the science to prove it. Using a technology that they have developed, they are leading the worlds research in the awareness and understanding that our Consciousness is a fundamental part of our material world.

Before DNA, before RNA: Life in the hodge-podge world - life - 08 January 2012 Take note, DNA and RNA: it's not all about you. Life on Earth may have begun with a splash of TNA – a different kind of genetic material altogether. Because RNA can do many things at once, those studying the origins of life have long thought that it was the first genetic material. But the discovery that a chemical relative called TNA can perform one of RNA's defining functions calls this into question. Instead, the very first forms of life may have used a mix of genetic materials. Today, most life bar some viruses uses DNA to store information, and RNA to execute the instructions encoded by that DNA. Nutrition Explorations: Kids Welcome to Fuel Up to Play 60 — the new home of all your favorite games and lessons from Nutrition Explorations! Here, you can still play your favorite games, AND you can learn more about Fuel Up to Play 60. Join the program and see how some of your favorite NFL players are working with the National Dairy Council to help you make your school an even healthier place! Little D's Nutrition Expedition® Games Little D's Nutrition Expedition® nutrition program is designed for lower elementary students. Though students of all ages can enjoy playing Little D the Dragon's games, they are designed to reinforce major objectives of this classroom program.

Animated Blood Types Since Rh negative people may produce anti-Rh antibodies, Rh positive blood should not be given to an Rh negative recipient. Based upon the above table, Rh positive recipients can theoretically receive positive or negative blood, and Rh negative donors can theoretically give to Rh positive and Rh negative recipients. Therefore, the "universal donor" is O Negative, while the "universal recipient" is AB Positive. Anti-Rh (immune-type) antibodies can readily pass through the placental capillary membranes. A serious potential problem called maternal-fetal blood incompatibility or Rh Disease could occur with a pregnant Rh negative mother who carries an Rh positive fetus. Leakage of fetal red blood cells (RBCs) into the mother's system through minute lesions in the placenta may cause her to produce anti-Rh antibodies.

Nitrogen-Fed Bacteria Could Power Our Future A bacterium that doesn't need its nitrogen preprocessed could breathe new life into environmentally friendly ethanol production, turning mowing the lawn from a chore into an income source. Most ethanol is currently produced from corn or sugar, competing with food for the raw materials while also combating rising prices, among other problems. If the transportation systems of the future are to be powered by low carbon biofuels, we need something better. Cellulosic ethanol is widely promoted as the great hope. Vast quantities of cellulose and lignin produced by grasses rot around the world every day. Ethanol made from cellulose and lignin would, in theory, emit no more carbon dioxide than is released naturally, and no more than the plants draw from the atmosphere to grow in the first place.

British scientists recreate the molecules that gave birth to life itself By Nick Enoch Updated: 08:03 GMT, 27 January 2012 Organic chemists at the University of York have recreated a pair of simple sugars - threose and erythrose - in a process which could have occurred before the advent of life Scientists are one step closer to understanding the origin of life after making a breakthrough into how sugar molecules found in DNA are created. Organic chemists at the University of York have recreated a pair of simple sugars - threose and erythrose - in a process which could have occurred before the advent of life. The team, led by Dr Paul Clarke, along with colleagues at the University of Nottingham, have made the first step towards showing how the basic building blocks of life developed. Every biological molecule has an ability to exist in a left-handed form or right-handed form.

Royal Society The story of the Royal Society is the story of modern science. Our origins lie in a 1660 ‘invisible college’ of natural philosophers and physicians. Today we are the UK’s national science academy and a Fellowship of some 1,600 of the world’s most eminent scientists. Nullius in verba The very first ‘learned society’ meeting on 28 November 1660 followed a lecture at Gresham College by Christopher Wren. Joined by other leading polymaths including Robert Boyle and John Wilkins, the group soon received royal approval, and from 1663 it would be known as 'The Royal Society of London for Improving Natural Knowledge'.

Twist in the tail of eukaryotic origins - life - 19 December 2011 Complex life may have had parasitic origins. New evidence suggests that the relatives of the mitochondria within our cells once had a tail, like many parasitic bacteria. Life on Earth is packaged into three domains: the simple bacteria, the archaea, and the complex eukaryotes that make up most of the life we see with the naked eye.