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A Brief Introduction to Genetics

A Brief Introduction to Genetics
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Acquired traits can be inherited via small RNAs Columbia University Medical Center (CUMC) researchers have found the first direct evidence that an acquired trait can be inherited without any DNA involvement. The findings suggest that Lamarck, whose theory of evolution was eclipsed by Darwin's, may not have been entirely wrong. The study is slated to appear in the Dec. 9 issue of Cell. "In our study, roundworms that developed resistance to a virus were able to pass along that immunity to their progeny for many consecutive generations," reported lead author Oded Rechavi, PhD, associate research scientist in biochemistry and molecular biophysics at CUMC. In an early theory of evolution, Jean Baptiste Larmarck (1744-1829) proposed that species evolve when individuals adapt to their environment and transmit those acquired traits to their offspring. However, some evidence suggests that acquired traits can be inherited. Dr. RNAi is triggered by doubled-stranded RNA (dsRNA), which is not found in healthy cells.

Teaching with Evernote: A 6th and 8th Grade Science Teacher Shares His Top Tips (Back-to-School Series) Posted by Kevin Buran on 30 Aug 2011 Comment Bio Kevin Buran teaches 6th and 8th grade science to students at Carmel Middle School. I use Evernote, Everywhere: I love… ScanSnap Scanner for scanning in worksheets and student workJotNot for taking snapshots of my daily itinerary and saving them instantly to Evernote I use Evernote for.. I first heard about Evernote about a year ago, but have become an avid user much more recently. For sharing information with my students Recently, there was a landslide in my area which blocked the roads and kept students from school for several weeks. I put everything my students might need to access —worksheets, articles, and labs — into a Shared Notebook that they can access through a link or via Moodle, a service that our school district has integrated.I have a Scanscap scanner, which I use to shoot worksheets straight into Evernote. For research and labs For extending the classroom beyond school walls User Tip Go Premium

Brief an den Ex-Lehrer: "Sie haben uns völlig falsch vorbereitet" - SPIEGEL ONLINE - Nachrichten - SchulSPIEGEL Sehr geehrter Herr Bode, dreieinhalb Jahre ist es nun her, dass Sie mein Lehrer in Geschichte und Deutsch waren. In der Zwischenzeit habe ich ein komplettes Bachelor-Studium absolviert. Ich sehe gerade vor meinem inneren Auge, wie Sie dieses Wort höhnisch als "Bätschler" ausspucken. Ihr Bart bebt dabei vor Lachen. Ich erinnere mich, wie ich Sie mit 13 Jahren das erste Mal als Lehrer bekam. Ich hatte dann nahezu jedes Schuljahr bis zum Abitur das Vergnügen mit Ihnen. Scheinbar geben Jahreszahlen Auskunft über die Intelligenz Ein Großteil von uns Schülern hat Ihre Ansprüche später allein aus ökonomischen Aspekten akzeptiert: Auf Transferaufgaben gab es immer die doppelte Punktzahl. Spätestens in der Oberstufe fruchtete ihr Werk, und ich schaute auch mal über den Tellerrand hinaus. Nun tut es mir leid, Sie enttäuschen zu müssen, Herr Bode. Wie ich zu diesem Fazit komme? Wo ist denn die Eigenleistung, wenn ich fünf Theorien nenne und erläutere? Lieber Herr Bode, Sie haben Recht.

Parents of Sandy Hook victim search for the genetics of violence Genetic data can reveal risks of cancer and other illnesses, so why can't it also tell if someone is prone to violent behavior? The Pittsburgh Post Gazette reports on the efforts of Jeremy Richman and Jennifer Hensel in starting The Avielle Foundation, which hopes to determine just that. The couple began the organization in remembrance of their daughter Avielle, who died in the Sandy Hook shooting — and they intend to fund research into biological triggers that could predict violent outbreaks before they happen. But some are skeptical of the research: though Richman and Hensel view it as a way to help people with aggressive behavior, no one's certain of what would become of a person found to carry a dangerous trait for violence.

The Illustrated Guide to Epigenetics Illustrations by Joe Kloc This month marks the ten-year anniversary of the sequencing of the human genome, that noble achievement underpinning the less noble sales of 23andMe's direct-to-consumer genetic tests. To commemorate the scientific occasion, we've created an illustrated introduction to one subfield of genetics likely to produce even more dubious novelty science projects someday: epigenetics. What is epigenetics? FIGURE 1: Through a process called mitosis, a single cell (A) splits into two cells (B) with identical genetic information. FIGURE 2: DNA coils around proteins called histones, forming a nucleosome. How does the epigenome work? Molecular "caps" called methyl groups can be attached to genes in order to effectively block them from giving instructions to the cell (FIGURE 3). FIGURE 3: Methyl groups attach themselves to base pairs of a gene, changing the way the gene is expressed.In these two ways the epigenome controls which genes ultimately get expressed.

Push, don't pull your eLearners - removing barriers to learning | Bioscience eLearning | Learn Science at Scitable In the context of eLearning, to me, this is a 'no-brainer' and I find it alarming, disappointing, and depressing, how often people don't get it. I think the same holds true in eLearning. If barriers to using eLearning tools are put up then educators and students won't use the tools, and this sets up a feedback loop. First, educators don't use the tools because they are too difficult or poorly designed, that is, the tools actually make it harder to teach, and the students won't use the system as the educators are not populating it with the information they need. When it comes to eLearning, and getting students and staff involved, I like to apply the KISS principle (Keep It Simple Stupid!). What is Pull? Pull, in the way I am using the word here, means that students (or educators) have to go and get the information, that is, the information is fetched, or pulled, to the user. The major disadvantage for the user is that they have to go and get the information. What is Push? And remember...

Britisches Bildungssystem: Hoffnungen zweiter Klasse Britisches Bildungssystem In den Problembezirken Großbritanniens sind Schulen oft schlecht ausgestattet, das soziale Umfeld schätzt Bildung nicht wert. Wer dort aufwächst, für den bleibt Oxford unerreicht. In einem Londoner Gemeindezentrum der Methodisten versammeln sich Jugendliche, um sich von den Krawallen zu distanzieren. LONDON taz | Ist das die perspektivlose Jugend Englands? Während Tottenham zur Normalität zurückkehrt und die Gerichte Londons mehr als tausend Jugendliche wegen der Krawalle angeklagt haben, beginnt in Großbritannien die Suche nach den Ursachen der sozialen Probleme. Tottenham ist unter den 5 Prozent der am meisten benachteiligten Viertel in England. Studiert zu haben ist in Tottenham keine Seltenheit. In Deutschland steht die Hauptschule in Verbindung mit sozialen Problemen. Selbst ein Uni-Abschluss ist nicht genug "Die kommen nicht auf die Topuniversitäten, denn deren Noten sind meistens einfach zu schlecht", sagt Matt Grist vom Thinktank Demos.

What human faces might look like in 100,000 years | Science | The Observer Since we humans are prone to launching chemical weapons, unwittingly killing off the bee population or other factors that could lead to our extinction, it may be presumptuous to imagine what we'll look like in 100,000 years. But designer and researcher Nickolay Lamm has speculated anyway, concluding with some rather startling illustrations that suggest that we'll look a bit like the aliens in Close Encounters of the Third Kind: large, bug eyes, huge foreheads and pigmented skin. It's conjecture, but also more than armchair futurism. Lamm based his illustrations on discussions with Dr Alan Kwan, an expert in computational genomics from Washington University who drew up a research paper to guide Lamm's artwork. Changes in the air and light around us will lead to adjustments in our facial structure, but we'll also be able to change what facial features we're born with, based on what's genetically trendy at the time. Parmy Olson is a technology writer for Forbes magazine in San Francisco.

The Ductile Helix: "Jumping Genes" May Influence Brain Activity Mobile DNA molecules that jump from one location in the genome to another may contribute to neurological diseases and could have subtle influences on normal brain function and behavior, according to a study published October 30 in Nature. (Scientific American is part of Nature Publishing Group.) Retrotransposons are mobile genetic elements that use a copy-and-paste mechanism to insert extra copies of themselves throughout the genome. First discovered in plants about 60 years ago, they are now known to make up more than 40 percent of the entire human genome and may play an important role in genome evolution (pdf). Researchers from the Roslin Institute in Edinburgh, Scotland, have now comprehensively mapped retrotransposon insertion sites in the genomes of normal human brain cells for the first time. Their analyses identified more than 7,700 insertion sites for L1, the best-characterized retrotransposon family that was already known to be active in brain cells.

Online Textbooks Aim to Make Science Leap From the Page That’s because the book was designed to be digital-only. Students will pay not for a printed edition at a bookstore, but for permanent access on the Internet ($49). And when they open the book on their laptops, tablets and smartphones, they will find other differences, too. True, the text is packed densely with definitions and diagrams — it is meant to teach college-level science, after all, and is from the publishers of the august journal Nature. Still, this isn’t your usual technical tome. “We want to take advantage of the things only digital media can do, and that are superior to print, to broaden the ways students learn science,” said Vikram Savkar, senior vice president and publishing director at Nature Publishing. The book offers many dynamic, interactive illustrations. Midway through a chapter, some interactive elements will quiz students on what they have just read — and provide hints and pointers when their answers are incorrect. “Principles of Biology,” Mr.

Störfall Schule. Unsere Kinder: Durchgereicht und abgewickelt? - Schüler, Eltern, Lehrer, Bildung. Schlagworte, die nicht erst seit den neuesten Diskussionen aus den politischen Reihen für reichlich Gesprächsstoff sorgen. Die Fehlentwicklungen im deutschen Bildungssystem von den Anfängen bis zu unserer heutigen modernen Gesellschaft, sowie die mit Brisanz geladenen Themen Zukunft und Kinder, die die Zeche für eine verkorkste Bildungspolitik bezahlen müssen, sind nur einige der aufschlussreichen Eckpunkte, die von Karin Jäckel in „Störfall Schule. Unsere Kinder: Durchgereicht und abgewickelt?“ aufgearbeitet wurden. Dr. Jäckel beginnt in ihrem Buch mit den Anfängen des deutschen Schulsystems, das in seiner Tradition lediglich zweihundert Jahre alt ist. „Störfall Schule. Selten habe ich ein solch umfassendes und den Herzschlag treffendes Buch gelesen, das sich mit kritischen Augen an ein Thema heranwagt, das gerne in der Gesellschaft unter dem Motto „ist halt so“ untergeht und von Regierungsseite immer wieder desolat behandelt wird.

Epigenetics Epigenetics PBS air date: July 24, 2007 CHEERFUL NEIL DEGRASSE TYSON: Did you ever notice that if you get to know two identical twins, they might look alike, but they're always subtly different? CANTANKEROUS NEIL DEGRASSE TYSON: Yep, whatever. CHEERFUL NEIL DEGRASSE TYSON: As they get older, those differences can get more pronounced. CANTANKEROUS NEIL DEGRASSE TYSON: No. CHEERFUL NEIL DEGRASSE TYSON: Yeah. CANTANKEROUS NEIL DEGRASSE TYSON: And don't our genes make us who we are? CHEERFUL NEIL DEGRASSE TYSON: Well they do, yes, but they're not the whole story. CANTANKEROUS NEIL DEGRASSE TYSON: Yeah, you're heavier, and I'm better looking. CHEERFUL NEIL DEGRASSE TYSON: Yeah, whatever. NEIL DEGRASSE TYSON: Imagine coming into the world with a person so like yourself, that for a time you don't understand mirrors. CONCEPCIÓN: As a child, when I looked in the mirror I'd say, "That's my sister." CLOTILDE: When I see my sister, I see myself. CLOTILDE: I have been told that I am a high risk for cancer.

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