No known hominin is common ancestor of Neanderthals and modern humans, study suggests -- ScienceDaily The search for a common ancestor linking modern humans with the Neanderthals who lived in Europe thousands of years ago has been a compelling subject for research. But a new study suggests the quest isn't nearly complete. The researchers, using quantitative methods focused on the shape of dental fossils, find that none of the usual suspects fits the expected profile of an ancestor of Neanderthals and modern humans. The study, which will be published online this week by the Proceedings of the National Academy of Sciences, was carried out by an international team of scholars from The George Washington University, Konrad Lorenz Institute for Evolution and Cognition Research in Austria, Indiana University and Atapuerca Research Team in Spain. P. The researchers use techniques of morphometric analysis and phylogenetic statistics to reconstruct the dental morphology of the last common ancestor of Neanderthals and modern humans. What comes next?
Genome BC Education Videos Check these cool animations and movies to learn more about genetics, genomics, dna and more: See all of our videos at our Youtube Channel: Pakistan's Malala Yousufzai celebrates 16th birthday with UN speech A powerful speech. Genomics: The Power and Impact Gene Screen BC 2012 Winning Videos: 1st place - Human Microbiome Research: An Introduction 2nd place - Lactase and Me 3rd place + Viewer’s Choice - Deflating the Genomic Bubble Learn more about Molecular Biology with these animated tutorials: The 'Central Dogma' of molecular biology is that 'DNA makes RNA makes protein'. In this accessible talk from TEDxBoston, Richard Resnick shows how cheap and fast genome sequencing is about to turn health care (and insurance, and politics) upside down. TED: Lights, Camera, Science Want to do your own lab experiments? Click for more education related images
Making a Genealogy Map Using the Google Maps API Introduction I wanted to try out using the Google Maps API for a project, so I decided I’d try to use it in conjunction with some genealogy data to see what I could come up with. The result is a family tree which is mapped out spatially rather than chronologically; once rendered, the following visual data is revealed: Migration paths - see where particular people suddenly moved a large distance Geographical density/immobility - see which areas the most family members were from Most popular places - see which villages or cities successive generations lived in Example Click on the image below to view a live example of the project (using real data from my family tree) and then read on for an explanation of how the program works: Features Google Maps features: Pan and zoom around the map using AJAX technology Switch to vector mapping, satellite mapping or hybrid maps Program features: By way of compromise, it is possible to adjust the zoom level via a variable at the top of the program though. Code
Genome British Columbia :: DNA Code Bracelet Make DNA Jewelery featuring Your Name! Download an Activity sheet with photos Materials StringBeads, in each red, blue, green & black Science BackgroundDNA is an ‘instructional code’ to make proteins for our body. DNA code bracelet BackgroundScientists have created shorthand that gives each amino acid its own letter, corresponding to 20 letters of our alphabet. Create DNA JeweleryCreate the DNA code for your name. Using the DNA Alias code, below, figure out the 3 letter code for each letter in your namee.g. Remember that each letter of your name is represented by 3 letters in DNA so you will have 3 times as many beads as letters in your name DNA Alias & CodeNote: There are only 20 amino acids. The above activity is fun for all ages. It is particularly useful in younger grades, 9, 10, 11, and 12 to introduce various discussions about DNA, amino acids, proteins and DNA transcription. Download an Activity sheet Rating: Reviewed by autoversicherung vergleich on Oct 25th, 2010 - Kris cool Great!!!
European Neanderthals were on the verge of extinction even before the arrival of modern humans New findings from an international team of researchers show that most Neanderthals in Europe died off around 50,000 years ago. The previously held view of a Europe populated by a stable Neanderthal population for hundreds of thousands of years up until modern humans arrived must therefore be revised. This new perspective on the Neanderthals comes from a study of ancient DNA published February 25 in Molecular Biology and Evolution. The results indicate that most Neanderthals in Europe died off as early as 50,000 years ago. After that, a small group of Neanderthals recolonised central and western Europe, where they survived for another 10,000 years before modern humans entered the picture. The study is the result of an international project led by Swedish and Spanish researchers in Uppsala, Stockholm and Madrid. The results presented in the study are based entirely on severely degraded DNA, and the analyses have therefore required both advanced laboratory and computational methods.
Category As of July 1, 2013 ThinkQuest has been discontinued. We would like to thank everyone for being a part of the ThinkQuest global community: Students - For your limitless creativity and innovation, which inspires us all. Teachers - For your passion in guiding students on their quest. Partners - For your unwavering support and evangelism. Parents - For supporting the use of technology not only as an instrument of learning, but as a means of creating knowledge. We encourage everyone to continue to “Think, Create and Collaborate,” unleashing the power of technology to teach, share, and inspire. Best wishes, The Oracle Education Foundation Neanderthals died out earlier than previously thought, new evidence suggests Direct dating of a fossil of a Neanderthal infant suggests that Neanderthals probably died out earlier than previously thought. Researchers have dated a Neanderthal fossil discovered in a significant cave site in Russia in the northern Caucasus, and found it to be 10,000 years older than previous research had suggested. This new evidence throws into doubt the theory that Neanderthals and modern humans interacted for thousands of years. Instead, the researchers believe any co-existence between Neanderthals and modern humans is likely to have been much more restricted, perhaps a few hundred years. The research, directed by the University of Oxford and University College Cork in collaboration with the Laboratory of Prehistory at St Petersburg, Russia, and funded by Science Foundation Ireland was recently published in PNAS Online Early Edition. The new dating evidence throws new light on when the Neanderthals became extinct and why.
DNA from the Beginning - An animated primer of 75 experiments that made modern genetics. DNA from the Beginning is organized around key concepts. The science behind each concept is explained by: animation, image gallery, video interviews, problem, biographies, and links. DNAftb blog: It's the season of hibernation, something I've always wished I could do. Oh, to wrap up in a ball, sleep away the winter, and wake to a beautiful spring day – like Bambi! Although the thought has always intrigued me, it never really occurred to me what a feat hibernation actually is. Feature: We have relaunched the Weed to Wonder site as a flexible "e-book" that can be viewed as a website, an app, or a printable PDF. Mailing List Gene News - ‘Alien’ DNA makes proteins in living cells for the first time Find the DNALC on: Language options:
Bunnies implicated in the demise of Neanderthals - 27 February 2013 BLAME it on the bunnies. The debate over what Neanderthals ate, and how it may have led to their demise, has turned to rabbits. Which, it is now claimed, they did not feast on. Signs that our extinct cousins hunted dolphins and seals were presented in 2008 as evidence of their sophistication. Now, John Fa of the Durrell Wildlife Conservation Trust in Trinity, Jersey, says the remains in caves around Europe became dominated by rabbits rather than large game around the time Neanderthals went extinct (Journal of Human Evolution, doi.org/kkn). It's not clear why they would have had more trouble changing prey, says Fa.
Introduction To Heredity The 2004 publication Investigating Safety: A Guide for High School Teachers by Texley et al. has raised an alarm in the teaching community about the usefulness and safety of PTC taste testing. This has led to PTC being banned from many schools and districts - we believe unnecessarily. Yes, PTC is toxic. In rats, the most sensitive animals tested, the oral LD50 of PTC (the amount that killed 50% of test animals) is 3 mg/kg. There is no question that PTC is toxic (LD50 in rat is 3mg/kg, in mouse 10mg/kg, and in rabbit 40mg/kg), but so is table salt (acute toxicity in humans at 500-1000mg/kg).