Agriculture
Treating peanut allergy bit by bit
Vitamin D-licious Mushrooms
Springing forward
Amphibians
Salamanders
Toads
Poison Dart Frogs
Animals
Glimpses of a Legendary Woodpecker
A Fallout Feast for Crabs
Dolphin Sponge Moms
Behavior
Math is a real brain bender
Nice Chimps
Sugar-pill medicine
Birds
Cardinals
Finches
Parakeets
Chemistry and Materials
Earth from the inside out
The solar system's biggest junkyard
The science of disappearing
Computers
Galaxies far, far, far away
Toxic Dirt + Avian Flu = Science Fair Success
Hitting the redo button on evolution
Dinosaurs and Fossils
Meet your mysterious relative
Dinosaur Eggs-citement
South America's sticky tar pits
E Learning Jamaica
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
Earth
Detecting an Eerie Sea Glow
Coral Islands Survive a Tsunami
Hot Summers, Wild Fires
Environment
Toxic Cleanups Get a Microbe Boost
Fungus Hunt
Plastic Meals for Seals
Finding the Past
Of Lice and Old Clothes
Decoding a Beverage Jar
Chicken of the Sea
Fish
Pygmy Sharks
Cleaning Up Fish Farms
Skates and Rays
Food and Nutrition
Packing Fat
The Essence of Celery
Turning to Sweets, Fats to Calm the Brain
GSAT English Rules
Who vs. Whom
Who vs. That vs. Which
Subject and Verb Agreement
GSAT Exam Preparation Jamaica
Preparing for the GSAT Exam
How are students placed after passing the GSAT exam
Mastering The GSAT Exam
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
42,000 students will sit for the GSAT Exam in two weeks
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Mathematics
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
A Sweet Advance in Candy Packing
How a Venus Flytrap Snaps Shut
Human Body
A Long Trek to Asia
Surviving Olympic Heat
Dreaming makes perfect
Invertebrates
Crustaceans
Walking Sticks
Millipedes
Mammals
Cheetah
Poodles
Squirrels
Parents
Children and Media
Choosing a Preschool: What to Consider
What Not to Say to Emerging Readers
Physics
Invisibility Ring
Strange Universe: The Stuff of Darkness
Extra Strings for New Sounds
Plants
Surprise Visitor
Underwater Jungles
A Change in Leaf Color
Reptiles
Tortoises
Caimans
Alligators
Space and Astronomy
Zooming In on the Wild Sun
Baby Star
Return to Space
Technology and Engineering
Machine Copy
Shape Shifting
Weaving with Light
The Parts of Speech
Adjectives and Adverbs
What is a Preposition?
Pronouns
Transportation
Ready, unplug, drive
Troubles with Hubble
Reach for the Sky
Weather
Watering the Air
Earth's Poles in Peril
Arctic Melt
Add your Article

Wake Up, Sleepy Gene

Some people can stay up all night and still get work done the next day. I'm not one of them. After a night without enough sleep, I feel cranky. I have trouble remembering things. And all I want to do is crawl back into bed and snooze. How do you feel after you've stayed up late to finish schoolwork? Or the day after a slumber party? Scientists now say that your answers to these questions may depend on your genes. Genes are stretches of DNA that work like an instruction manual for our cells. Genes tell our bodies and brains what to do. People have about 40,000 genes, and each gene can have different forms. So, for example, certain forms of some genes make your eyes blue. Other versions of those genes make your eyes brown. In a similar way, new research suggests that a gene called period3 affects how well you function without sleep. The discovery adds to older evidence that period3 helps determine whether you like to stay up late or get up early. The period3 gene comes in two forms: short and long. Everyone has two copies of the gene. So, you may have two longs, two shorts, or one of each. Your particular combination depends on what your parents passed on to you. Scientists from the University of Surrey in England studied 24 people who had either two short or two long copies of period3. Study participants had to stay awake for 40 hours straight. Then, they took tests that measured how quickly they pushed a button when numbers flashed on a screen and how well they could remember lists of numbers. Results showed that the people with the short form of period3 performed much better on these tests than the people with the long form did. In both groups, people performed worst in the early morning. That's the time when truck drivers and other night-shift workers say they have the most trouble concentrating. After the first round of experiments, participants were finally allowed to sleep. People in the group that performed well on the tests (those with the short form of period3) took about 18 minutes to nod off. People with the long period3 gene, by contrast, fell asleep in just 8 minutes. They also spent more time in deep sleep. That suggests that people with the long form of the gene need more and deeper sleep to keep their brains working at top form.

Wake Up, Sleepy Gene
Wake Up, Sleepy Gene








Designed and Powered by HBJamaica.com™