Earth - How much of your body is your own? This story is part of BBC Earth's "Best of 2016" list, our greatest hits of the year. Browse the full list. • Bill Gates is actually worth $1,956• Canadian pop star Justin Bieber has five times fewer cells in his brain than in his liver• Top tennis player Serena Williams has 24.5 trillion red blood cells powering her body• Internet and social media pioneer Mark Zuckerberg’s body contains 800MB of data• President Barack Obama’s head rules his heart; his brain weighs 1.4kg, his heart just 0.4kg Welcome to The Making of Me and You, a unique, new digital interactive from BBC Earth that details extraordinary personalised facts. Just input your date of birth, sex at birth, height and weight, and choose the metric or imperial units that make most sense to you. And instantly find out: Explore, enjoy, and share with your friends either the whole page, or your favourite insights, comparing your vital statistics.
This is our story, the story of the making of me and you. Lead photo credit: Beyond Words. Evo-Devo (Despacito Biology Parody) | A Capella Science. CellCraft (Fabien) Concepts in Biochemistry - Interactive Animations. Cell Game- Anatomy - Health and Science (Fabien) LEA Serious game OGM tiltfactor >> PROFITSEED. LEA Genetically Modified Foods. Can you think of some possible risks of growing plants that contain genes from other organisms? Let's examine our earlier examples: the beetle-resistant tomato, the vaccination banana, and the saltwater rice plant. We've already covered the potential advantages of these plants, but what are the concerns? Cross-breeding with wild populations. For all of these examples, a primary concern is preventing genetically modified versions from mixing with the naturally existing populations of plants from which they're derived.
Plants rely on the transfer of pollen, via insects or the air, to breed and produce offspring, and it's difficult to control how they cross-breed in the wild. In most cases, it's not yet clear how introduction of the non-native gene would affect wild populations. Critics of genetically modified plant technology cite the need to learn more about the potential long-term impacts of genetically modified plants on the environment before mass-producing them. LEA Selective Breeding. 13-1 Changing the Living World Selective Breeding Takes advantage of naturally occurring genetic variation in organisms & passes them on to next generation Most domestic animals & crops have been produced this way (horses, cats, Burbank, potato) Humans use this to pass desired traits on to the next generation of organisms Hybridization = crossing dissimilar individuals to bring together the best traits of both organisms Produces hybrids - which are often hardier than parents Hybrids have combined/desired traits of both parents Inbreeding = continued breeding of individuals with similar characteristics to maintain the desired characteristics of a line (ex. pure breed golden retriever) Has risks… increases breed's susceptibility to disease & deformities Increasing Variation Breeders can increase variation in a population by inducing mutations Mutation = any change in DNA Mutations occur spontaneously, but rate can be increased through radiation & chemicals Techniques are used to: 1. 2. 3. 4.
ALISON Recombinant DNA Technology and Transgenic Animals | Learn Science at Scitable. LEA The biotechnology revolution | Xplore Health | Discover the latest on health research. Xplore Health Discover the latest on health research advanced search Home › The biotechnology revolution › Plants to farm drugs The biotechnology revolution Plants to farm drugs Can plants act as drug “factories”? This video shows us a new line of research which involves using agrobacteria to produce drugs. 35620 views agrobacteriaAIDSclassworkclinical trialsdrugeducationeducational resourcemalariamultimedia resourcetransgenic planttuberculosisvideo Comments (0) Post new comment The content of this field is kept private and will not be shown publicly. The comments in this section are moderated in order to avoid spam. Enter the characters shown in the image. Subscribe to the Newsletter Are you a teacher? Other resources Centre of the CellExplore all the secrets of cells with Centre of the Cell interactives.
More resources Un mundo de actividades educativas a tu medida en www.educaixa.com © Copyright 2010 Xplorehealth. Developed by: With the collaboration of: Originally funded by: Founding consortium: LEA Transgenic Mice. What's The Motivation? As a child, Capecchi wandered homeless in Italy. As a researcher, his first attempts at gene targeting were deemed not ready for funding by the National Institutes of Health. Capecchi is an individual whose personal life proves that while some events are not probable, anything is possible. Read Mario's story. During the 1980s, Capecchi devised a way to change or remove any single gene in the mouse genome, creating strains of mice that pass the altered gene from parent to offspring. In the years since, these "transgenic" and "knockout" mice have become commonplace in the laboratory. Capecchi's pioneering work in gene targeting has taught us much about how the body builds—and rebuilds—itself. And he has raised a key question for the future of human medicine: if we can replace a perfectly good gene with a mutated one, can we also go the other way, replacing problem genes with those that work?
How to Build a "Knockout" Mouse Here's how: 1. 2. 3. 4. 5. 6. 7. 8. Rosalind Franklin: Biography & Discovery of DNA Structure (Fabien) Many people recall that the structure of the DNA molecule has the shape of a double helix. Some may even recall the names of the scientists who won the 1962 Nobel Prize in Medicine for modeling the structure of the molecule, and explaining how the shape lends itself to replication. James Watson and Francis Crick shared the Nobel Prize with Maurice Wilkins, but many people feel that much of the credit for this world-shaking achievement should rightfully go to someone who was absent from that stage, a woman named Rosalind Franklin. Rosalind Franklin was born July 25, 1920, and grew up in a well-known Jewish family in pre-World War II London, and was known in the family for being very clever and outspoken. Her parents sent her to St.
“She was best in science, best at maths, best in everything. Franklin graduated from Newnham College at Cambridge in 1938 and took a job with the British Coal Utilization Research Association. Around this time, Franklin and Gosling made a startling discovery. Les lapins et les drosophiles au service de la génétique. Jouer avec les molécules pour déterminer une parenté sur le web. Recommandation didactique (Bernard Gissot IA-IPR de SVT) Comme dans toute progression pédagogique et afin de respecter la « démarche de résolution de problèmes » indispensable à la formation scientifique de l’élève, ces fiches ne peuvent être utilisées que dans le cadre de cette méthode. Autrement dit, cette séance ne peut se situer dans la démarche que dans une phase de mise à l’épreuve expérimentale. Elle fait donc obligatoirement suite à l’énoncé d’une problématique et à la proposition d’hypothèses de résolutions formulées par les élèves. Ces dernières seront alors validées ou invalidées par la saisie de données scientifiques proposées par le site .
Ces fiches ne peuvent en aucun cas être distribuées de façon directive mais seulement comme une trame possible à un protocole d’activité de validation scientifique. Point de départ Le site de départ est celui du NCBI : Premier temps : Recherche d’une protéine d’une espèce donnée Par exemple, si on saisit cat : 'Lost' Letters Reveal Twists in Discovery of Double Helix. Rediscovered letters and postcards highlight the fierce competition among scientists who discovered DNA's famous double-helix structure and unraveled the genetic code. Francis Crick and James D. Watson shared a 1962 Nobel Prize with Maurice Wilkins for their work on revealing the structure of the DNA molecule that encodes instructions for the development and function of living beings.
But formerly lost letters kept by Crick add more color to the well-known rivalries between Wilkins and the Crick-Watson duo. "The [letters] give us much more flavor and examples illuminating the characters and the relations between them," said study researcher Alexander Gann, editorial director at Cold Spring Harbor Laboratory Press in New York. A fourth researcher credited with initial DNA work, Rosalind Franklin, died of cancer in 1958 and was never nominated for a Nobel Prize.
Rival labs The exchange emphasizes the different attitudes among the scientists, Gann explained. 'Rosy' the scientist.