Agriculture
Vitamin D-licious Mushrooms
Seeds of the Future
Microbes at the Gas Pump
Amphibians
Frogs and Toads
Tree Frogs
Toads
Animals
Elephant Mimics
Lucky Survival for Black Cats
Roach Love Songs
Behavior
Flower family knows its roots
Mice sense each other's fear
Lightening Your Mood
Birds
Tropical Birds
Ibises
Flightless Birds
Chemistry and Materials
Moon Crash, Splash
Heaviest named element is official
Bandages that could bite back
Computers
Computers with Attitude
The Shape of the Internet
Galaxies far, far, far away
Dinosaurs and Fossils
Early Birds Ready to Rumble
Three strikes wiped out woolly mammoths
The bug that may have killed a dinosaur
E Learning Jamaica
Results of GSAT are in schools this week
2014 GSAT Results for Jamaican Kids
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Distant Quake Changes Geyser Eruptions
Rocking the House
Easy Ways to Conserve Water
Environment
Antarctica warms, which threatens penguins
Animal CSI or from Science Lab to Crime Lab
An Ocean View's Downside
Finding the Past
A Plankhouse Past
Your inner Neandertal
A Long Haul
Fish
Sharks
White Tip Sharks
Perches
Food and Nutrition
Sponges' secret weapon
The Color of Health
How Super Are Superfruits?
GSAT English Rules
Problems with Prepositions
Capitalization Rules
Finding Subjects and Verbs
GSAT Exam Preparation Jamaica
Mastering The GSAT Exam
42,000 students will sit for the GSAT Exam in two weeks
GSAT Practice Papers | GSAT Mathematics | Maths
GSAT Exams Jamaica Scholarships
GSAT Exam Preparation
GSAT Scholarship
Access denied - Disabled boy aces GSAT
GSAT Mathematics
How a Venus Flytrap Snaps Shut
Setting a Prime Number Record
Prime Time for Cicadas
Human Body
Foul Play?
Germ Zapper
A Long Haul
Invertebrates
Squid
Scallops
Moths
Mammals
African Zebra
Seal
Koalas
Parents
The Surprising Meaning and Benefits of Nursery Rhymes
Expert report highlights the importance to parents of reading to children!
What Not to Say to Emerging Readers
Physics
Speedy stars
The Mirror Universe of Antimatter
Dreams of Floating in Space
Plants
Assembling the Tree of Life
A Change in Leaf Color
Cactus Goo for Clean Water
Reptiles
Crocodilians
Sea Turtles
Iguanas
Space and Astronomy
Witnessing a Rare Venus Eclipse
Sounds of Titan
Slip-sliding away
Technology and Engineering
Young Scientists Take Flight
Riding Sunlight
Space Umbrellas to Shield Earth
The Parts of Speech
Pronouns
Problems with Prepositions
Countable and Uncountable Nouns
Transportation
Where rivers run uphill
Robots on the Road, Again
Troubles with Hubble
Weather
The Best Defense Is a Good Snow Fence
Arctic Melt
A Change in Climate
Add your Article

Your inner Neandertal

According to a new study, many modern humans might be walking around with a little caveman inside. Inside their cells, that is. The Neandertals, now extinct, are ancient members of the human family tree. Neandertals, or Homo neanderthalensis, appeared about 300,000 years ago and anatomically modern humans, Homo sapiens, appeared about 250,000 to 200,000 years ago. No other extinct species is a closer relative to humans than Neandertals. Neandertals probably walked on two legs and lived in what are now Europe, Asia and the Middle East until they vanished, 30,000 years ago. They may have looked a lot like other human species and lived in some of the same regions, but scientists have long thought that Neandertals and early modern humans had little to do with each other. But the new study suggests that the two species may have become close enough to have children together. The Neandertals may be long gone, but researchers can learn a lot about them by studying genetic information left behind, in their bones. In the new study, researchers investigated ancient bones to compare the genetic material of Neandertals to genetic material in contemporary people (Homo sapiens). The scientists found evidence that, once upon a time, members of the two species mated and produced offspring. According to the study, 1 to 4 percent of the DNA in modern people from Europe and Asia came from the Neandertals, Science News reports. “It’s a small, but very real proportion of our ancestry,” David Reich told Science News. Reich, who worked on the study, is a geneticist who studies the genes of particular populations. He works at the Broad Institute, which is at both MIT and Harvard University in Cambridge, Mass. “Neandertals are not totally extinct; they live on in some of us,” Svante Pääbo told Science News. Pääbo leads a large group of scientists who do research aimed at understanding Neandertal genes. Reich was surprised to see the DNA connection between the ancient cavemen and modern people. One year ago, a team of scientists (including Reich and Pääbo) analyzed and reported the entire genetic code for Neandertals. The entire genetic code of a species is called its genome, and it is a list of all the important genes in the species’ DNA. These genes contain the instructions for how to build proteins, and proteins perform specific functions in a cell. When scientists produced the first version of the Neandertal genome, they said it was very unlikely that Neandertals and humans had ever interbred. For the new study, Reich and his colleagues used genetic material from the bones of Neandertals, found in a cave in Croatia. The scientists compared those genes to the genomes of five modern humans from different parts of the world: China, France, Papua New Guinea, southern Africa and western Africa. The results were surprising: not everyone had the same Neandertal connection. The two people from Africa did not have Neandertal DNA, but the other three did — even though Neandertals never lived in China or Papua New Guinea. The modern people from those areas had just as much Neandertal DNA as the person from Europe. Since the modern Africans did not have Neandertal DNA, the scientists think that Neandertals and humans began to interbreed after humans left Africa and entered the Middle East (before moving on to colonize the rest of the world). The researchers aren’t sure how long the two species mixed. Although the new study is exciting for geneticists, other scientists are less impressed. Some scientists say that Neandertals and modern humans are so similar they shouldn’t be considered separate species anyway. In addition, archaeologists have found skeletons in Europe that look like both Neandertals and modern humans — which suggests the two species mixed. “After all these years the geneticists are coming to the same conclusions that some of us in the field of archaeology and human paleontology have had for a long time,” João Zilhão, an archaeologist, told Science News. “What can I say? If the geneticists come to this same conclusion, that’s to be expected.” John Hawks is an anthropologist at the University of Wisconsin–Madison. Anthropologists study the behavior and development of human beings. Hawks points out that the new study tells us that many people have a distant relative that was a Neandertal. “It’s impossible to talk about them as ‘them’ anymore,” he says. “Neandertals are us.”

Your inner Neandertal
Your inner Neandertal








Designed and Powered by HBJamaica.com™