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Blueprint for life not so clear cut

Posted: Published on November 19th, 2014

DNA is often referred to as a blueprint for life, or the instruction set for living organisms. We know that DNA is passed down through generations from one individual to their offspring. But did you know that DNA doesnt always follow this linear path, but instead jumps around between organisms? Professor David Adelson and his team in the School of Molecular and Biomedical Science at the University of Adelaide work on mapping the location of these genes, known as transposons, which jump between organisms to find out when and how this happens, and to determine their impact on the genome. In this post, Professor Adelson explains. By Professor David Adelson, adapted from Jumping Genes, e-Science, October 2013 Jumping DNA For decades it was believed that all the genes that encoded an organism could only be transmitted vertically from ancestors to descendants. But the discovery of Avery, MacLeod and McCarty in 1944 showed that DNA could transfer the gene for virulence from one strain of bacteria to another, indicating that it could also be transmitted horizontally between unrelated organisms. While this research was the origin of modern molecular biology, its full significance was not understood until many years later. And until … Continue reading →

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County settles DNA lawsuit with convicted killer

Posted: Published on November 19th, 2014

ERIE, Pa. (AP) - A former northwestern Pennsylvania high school teacher serving a life term in the strangulation murder of a student in 1975 will get a DNA test he believes will show he didn't also rape the girl. The Erie Times-News (http://bit.ly/11glgX0 ) reports that Erie County prosecutors settled the lawsuit filed by 77-year-old Raymond Payne by agreeing to the DNA test. Payne is not denying killing 16-year-old Debbie Gama. But he contends it was an accident and not premeditated and that he should have been convicted of a lesser crime such as manslaughter rather than first-degree murder. Defense attorney Anderson Bailey said a favorable DNA test could bolster Payne's claims and warrant a new trial. Prosecutors say they believe Payne meant to kill the girl, whether or not he raped her, and is rightly serving a life sentence. Read the original: County settles DNA lawsuit with convicted killer … Continue reading →

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eTwinning in the Daily Educational Activities Chemistry experiment – Video

Posted: Published on November 19th, 2014

eTwinning in the Daily Educational Activities Chemistry experiment The objective of this experiment was to show how much gas is released in our stomach when we drink coke and other fizzy drinks. By: sukrzsza … Continue reading →

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The Chemistry of Cats – Reactions – Video

Posted: Published on November 19th, 2014

The Chemistry of Cats - Reactions Subscribe! http://bit.ly/ACSReactions They are seemingly the most popular thing on the Internet, the subject of millions of videos and hundreds of memes: cats. Now we've got answers to some... By: Reactions … Continue reading →

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Minecraft – Material Energy ^ 3 – Episode 17: Starting Chemistry – Video

Posted: Published on November 19th, 2014

Minecraft - Material Energy ^ 3 - Episode 17: Starting Chemistry In a remote outpost, calamity strikes, rendering you the sole survivor of the facility! No rescue is inbound. It is up to you to manipulate matter and energy in order to rescue yourself, while... By: Bil Kulp … Continue reading →

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Chemistry 51A: Organic Chemistry. Lecture 19 – Video

Posted: Published on November 19th, 2014

Chemistry 51A: Organic Chemistry. Lecture 19 UCI Chem 51A Organic Chemistry (Fall 2014) Lec 19. Organic Chemistry -- Understanding Organic Reactions View the complete course: http://ocw.uci.edu/courses/chem_51a_organic_chemistry.html... By: UCIrvineOCW … Continue reading →

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Research in Wolfson Atmospheric Chemistry Laboratories (WACL) – Video

Posted: Published on November 19th, 2014

Research in Wolfson Atmospheric Chemistry Laboratories (WACL) A movie showing some of the work carried out within the WACL building and some of the staff and students who carry out the work. By: WACL … Continue reading →

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Kitchen Chemistry Set from Thames & Kosmos – Video

Posted: Published on November 19th, 2014

Kitchen Chemistry Set from Thames Kosmos With the Spark Kitchen Chemistry set, kids can perform five science experiments using materials found right in your kitchen. For full review and shopping info http://ttpm.com/p/12315/thames-kos... By: TTPM … Continue reading →

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What Philae Did During Its 60 Hours on a Comet

Posted: Published on November 19th, 2014

The simple reason why the lander was sent all the way to a comet was to do chemistry that can explain the origin of life Editor's note: The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. The drama of Philaesslow fall,bounceandunfortunate slide into hibernationwas one of the most thrilling science stories of a generation. But what in its short 60 hours of life on Comet 67P did it achieve? The short answer is analytical chemistry. Philaes payload included three instruments that are quite common in chemistry labs, but when deployed on a comet could answer questions about the origins of the solar system and life itself. Right- or left-handed life Four billion years ago the solar system was an unsettled place. Earth was undergoing heavy bombardment by asteroids and comets. This continuous shower may have delivered a significant amount of water to our planet. But the comets werent just dirty snowballs. A third of their contents was probably complex organic (that is, carbon-based) molecules. These compounds may well have triggered the chemistry that led to life on our planet. One of Philaes goals is to provide evidence that the organic chemicals on … Continue reading →

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Whizz bang! Young chemists win schools contest

Posted: Published on November 19th, 2014

CHEMISTRY COMPETITION WINNERS: Students Joe Stelling (15, left), Hal Burke (13), James MacNaughton-Jones (13) and Michael Banks (15, right) from Durham School. Picture: DAVID WOOD (13052210) CHEMISTRY COMPETITION WINNERS: Students Joe Stelling (15, left), Hal Burke (13), James MacNaughton-Jones (13) and Michael Banks (15, right) from Durham School. Picture: DAVID WOOD (13052206) CHEMISTRY COMPETITION WINNERS: Students Joe Stelling (15, left), Hal Burke (13), James MacNaughton-Jones (13) and Michael Banks (15, right) from Durham School. Picture: DAVID WOOD (13052202) First published in News by Mark Tallentire A SCHOOL has won a regional chemistry contest. A four-strong team from Durham School triumphed in the regional heat of the Royal Society of Chemistry (RSC) Top of the Bench competition. The squad will compete in the national finals in the spring. There will be a test and a problem solving exercise. The Durham team is Michael Banks, Joe Stelling, Hal Burke and James MacNaughton-Jones. Traci Moore, Durham Schools head of chemistry said: Particular outstanding performances were demonstrated by Michael Banks who was able to work out year 12 functional group structures having seen them just once and Hal Burke who knew the element gallium in response to the most obscure clue the teachers had … Continue reading →

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