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Why Women Are Stripey

Why Women Are Stripey
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10 Incredible Chemical Reaction GIFs Explained We encounter thousands of chemical reactions every day: plants use them in photosynthesis, metals rust over time, and combustion reactions provide us with heat and light, among thousands of other daily uses. Chemical reactions occur when reactants transform into new substances, called products, through creating and breaking bonds between atoms. Sometimes the process creates some pretty wild effects. Check out our top 10 chemical reactions below: 1) Disintegration (Mercury Reacts with Aluminum) Image credit: Theodore Gray via Youtube When aluminum rusts, it creates a protective oxide layer that prevents the aluminum atoms underneath from further rusting. 2) Pharaoh's Serpent (Mercury (II) Thiocyanate Reacts with Oxygen) Image credit: tenkowal via Youtube The reaction depicted above, nicknamed the "Pharoah's Serpent," actually use to be a common classroom demonstration. 3) Explosive Gummi Bear (Heated Potassium Chlorate Reacts with a Gummi Bear) Image credit: ebaum via ebaumsworld.com

The Internet in Real-Time Epigenetics II: DNA Methylation in Arabidopsis Jermel Watking, Bruce Nash, and David Micklos DNA Learning Center, Cold Spring Harbor Laboratory Although DNA is the blueprint of life, not all genes are actively expressed in every cell within a multicellular organism. As discussed in our Carolina Tips® article, "Epigenetics I: Using Carolina Corn Ears to Teach Genetic Imprinting," phenotypic differences between cells occur because genes are turned on or off in a cell-specific way. Arabidopsis, FWA, and DNA methylation One very important step in plant development is the switch from vegetative growth to flowering for sexual reproduction. FWA is normally expressed in endosperm, a tissue that feeds the seedling but does not contribute to the structure of the adult. Classroom application To study this homeotic mutation, you can grow Arabidopsis seed in your class. This relatively simple experiment offers a sophisticated test for specific chemical changes to DNA that act as an important developmental regulator in plants.

Cosmic Inflation Explained Free excerpt from The PHD Movie 2! - Watch this free clip from the movie that Nature called "Astute, funny"! Watch the new movie! - The PHD Movie 2 screenings are in full swing! Summer Hiatus - PHD has been on Summer Hiatus while Jorge finishes the new PHD Movie. The PHD Movie 2 OFFICIAL TRAILER - is out!! Filming is done! Coming to Campuses this Fall! The Science Gap - Watch Jorge's TEDx Talk:

▶ One Direction - What Makes You Beautiful (5 Piano Guys, 1 piano) - ThePianoGuys We're on Tour! Sheet Music: Album here: song here: Subscribe to our main channel: to our BTS channel: us on Facebook: us on Twitter: Get PianoGuys T-Shirts, Wristbands, Sheetmusic here: STORY BEHIND THE SONGThe idea: A couple months ago the 5 of us were gathered round a piano prepping for a video shoot scheduled for that day. We were brainstorming ideas when one of us (can't remember who!) The song: We went through several song possibilities before landing on "What Makes You Beautiful" by One Direction. The location: Where to film? Many thanks to the awesome guys at Annex Recording and Giles Reaves (engineer) for letting us record at their studio.

DNA from the Beginning - An animated primer of 75 experiments that made modern genetics. Science News, Articles, and Information 12 Enjoyable Names for Relatively Common Things Fancy yourself a logophile ... and didn't have to look up "logophile"? See if you know these 12 words for common things. 1. The plastic table-like item found in pizza boxes is called a box tent and was patented in 1983. Most people in the biz now call it a pizza saver. 2. 3. 4. 5. 6. 7. 8. Getty Images 9. 10. 11. 12. What are some of your favorite extra ordinary/extraordinary words? For 12-12-12, we’ll be posting twenty-four '12 lists' throughout the day.

What makes me tick...tock? Circadian rhythms, genetics, and health | Project NEURON | University of Illinois Following the introduction of basic principles and key terminology of circadian rhythmicity in Lesson 1, this lesson begins with students discussing model organisms and how scientists use them; Drosophila melanogaster is used as a model for the study of circadian rhythms. Students use several NetLogo simulations to examine how light, temperature, and genetic mutations can affect a fly’s behavior. Students make connections between these simulations and their own circadian rhythms, developing models throughout the lesson of how three different factors (light, temperature, and genetic mutations) can affect both the flies’ activity levels and their own throughout the day. A possible extension to using these NetLogo models is to have students design and carry out their own fly experiment looking at how light affects fly activity.

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