Saturday January 25, 2020
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Scientists Reform Face Of Another Human Ancestor

Now, Scientists have come up with a reformed face of a human ancestor

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This image shows a preliminary portrait of a juvenile female Denisovan based on a skeletal profile reconstructed from ancient DNA methylation maps. IANS

Exactly what our Denisovan relatives who lived 100,000 years ago might have looked like had been anyone’s guess for a simple reason – the entire collection of Denisovan remains includes a pinky bone, three teeth, and a lower jaw. Now, Scientists have come up with a reformed face of a human ancestor.

Now they have got a face. Using genetic data, scientists have now produced reconstructions of these long-lost relatives.

“We provide the first reconstruction of the skeletal anatomy of Denisovans,” said study author Liran Carmel of the Hebrew University of Jerusalem in Israel.

“In many ways, Denisovans resembled Neanderthals, but in some traits, they resembled us, and in others they were unique,” Carmel said.

Overall, the researchers identified 56 anatomical features in which Denisovans differed from modern humans and/or Neanderthals, 34 of them in the skull, according to a report published in the journal Cell.

For example, the Denisovan’s skull was probably wider than that of modern humans or Neanderthals. They likely also had a longer dental arch.

Rather than relying on DNA sequences, the researchers extracted anatomical information from gene activity patterns.

human, ancestor, scientists, sculpture
Using genetic data, scientists have now produced reconstructions of these long-lost relatives.
IANS

Those gene activity patterns were inferred based on genome-wide DNA methylation or epigenetic patterns.

To test the method the researchers developed, they first applied it to two species whose anatomy is known: the Neanderthal and the chimpanzee.

They found that roughly 85 per cent of the trait reconstructions were accurate in predicting which traits diverged and in which direction they diverged.

By focusing on consensus predictions and the direction of the change, rather than trying to predict precise measurements, they were able to produce the first reconstructed anatomical profile of the little-understood Denisovan.

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The evidence suggests that Denisovans likely shared Neanderthal traits such as an elongated face and a wide pelvis.

It also highlighted Denisovan-specific differences, such as an increased dental arch and lateral cranial expansion, the researchers said.

“Studying Denisovan anatomy can teach us about human adaptation, evolutionary constraints, development, gene-environment interactions, and disease dynamics,” Carmel said. (IANS)

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Follow These Tips to get Rid of Body Odour

Every human has a natural and distinct smell but a few factor can lead to bad body odour

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Body odour
Body odour is an unpleasant smell caused by the breakdown of bacteria on the body into protein and certain acids that causes the smell. Pixabay

Each human has a natural, distinct smell, but it can turn into bad body odour due to certain factors. Following a few tips can lead to a healthy lifestyle.

“Body odour is an unpleasant smell caused by the breakdown of bacteria on the body into protein and certain acids that causes the smell. Often, it is prevalent in obese individuals, people who eat spicy food on a regular basis, or people with medical conditions such as diabetes or hyperhidrosis. Everyone’s odour is influenced by the person’s diet, gender, health and medication,” Dr. Shireen Furtado, Consultant – Medical and Cosmetic Dermatology, Aster CMI Hospital says.

She suggests her top tips to get rid of body odour:

1. Maintain hygiene and keeping yourself clean is the primary way to reduce body odor.

Body odour
Each human has a natural, distinct smell, but it can turn into bad body odour due to certain factors. Pixabay

2. Keep your armpits clean by using anti-bacterial soaps and shaving or waxing them on a regular basis to help reduce the body perspiration and smell.

3. Deodorants or antiperspirants help make the skin more acidic, making it more difficult for bacteria to thrive resulting in less sweat.

4. Foot odour can be prevented by washing your feet at least once a day, preferably with warm water. Try and walk barefoot around whenever you can to help aerate your feet.

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5. Try and avoid spicy foods that can only make your sweat more pungent. Too much intake of red meat can develop more rapid body odor.

6. Detoxing your body cells as you cleanse your body by cutting on toxic substances can help you get the best results. (IANS)