Human Evolution

Human eye capable of detecting smallest units of light, photons

Human eye capable of detecting smallest units of light, photons

You may not believe it, but human eyes have high sensitivity and can even detect photons. It means that human eye can see individual particles, a thing that even high-tech machines face trouble in detecting.

A new research has found that human eye is able to detect the smallest unit of light known as photons. Study’s lead researcher Alipasha Vaziri from Rockefeller University said that the eyes can detect photons under super-dark conditions. The cells in our eyes that can detect light are known as rod cells, which become sensitive in the dark.

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Scientists privately discuss project aimed to make synthetic human genome

Scientists privately discuss project aimed to make synthetic human genome

Can you imagine future where babies are taking birth without needing biological parents? This is something scientists today are discussing secretly. They want to create synthetic human genome for which they would employ chemicals to make man-made version of all DNAs found in human chromosomes.

The issue inevitably brings concern in life sciences community because such a technique will introduce kinds of human beings that were never ever observed before. The project is yet an idea only. This would also make improvement in DNA synthesis.

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Half-dozen Primate Fossils unearthed from China may solve Evolution of Primates

Half-dozen Primate Fossils unearthed from China may solve Evolution of Primates

Fossils of six new species discovered in China may shed light on evolution of primates. These furry creatures lived in southern China approximately 34 million years ago, as per a study conducted by a group of researchers.

The fossils are of six extinct primate species that were previously unknown, announced researchers on Thursday. Four of the creatures are alike lemurs of Madagascar, one seems like Philippines’ tarsiers, and the remaining primate species is similar to monkey.

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Two research teams create new record by growing human embryos outside womb for around two weeks

Two research teams create new record by growing human embryos outside womb for around two weeks

Research teams have created a record by growing human embryos outside a woman’s womb for around two weeks. They had to stop the embryo development so they do not violate an international ethics standard.

It has happened for the first time that researchers have been able to reach so close to the 14-day rule. For the first time, the rule was proposed in 1979 and was adopted in many countries at which laboratory research on human embryos should stop.

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Infections carried by ancient humans from Africa probably contributed to demise of Neanderthals

Infections carried by ancient humans from Africa probably contributed to demise of Neanderthals

A latest study has suggested that ancient humans, who had moved out of Africa, could have infected Neanderthals with herpes. There have been a number of theories regarding demise of Neanderthals. According to the researchers of the new study, the infections brought by humans from Africa could have led to that downfall.

They have identified many types of infections that probably had made the species of hominins sick. The infections include tapeworm infection, tuberculosis, stomach ulcers, and the specifically striking disease herpes.

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Researchers carry out first in-depth genetic analysis of Neanderthal Y chromosome

Researchers carry out first in-depth genetic analysis of Neanderthal Y chromosome

A research paper published in the American Journal of Human Genetics has unveiled new facts about the relationship between Neanderthals and modern humans and genetic factors that have kept two lineages separate. Earlier research has indicated that modern humans and Neanderthals may have interbred at different times and at different regions.

In the study, researchers have completed the first in-depth genetic analysis of a Neanderthal Y chromosome. The Y chromosome was the main factor that was yet to be assessed from the Neanderthal genome.

Incompatibilities in DNA of Neanderthals and modern humans probably limited impact of interbreeding between them

PENDING-Incompatibilities in DNA of Neanderthals and modern humans probably limited impact of interbreeding between them

This might be the case that incompatibilities in the DNA of Neanderthals and modern humans restricted the impact of interbreeding between these two groups. Now, it is commonly known that a number of modern humans have 4% Neanderthal DNA.

However, a latest analysis of the Neanderthal Y chromosome, which is the genes’ package passed down from fathers to sons, has demonstrated that it is absent in modern populations.

Satellite Imagery hints at Second Viking site in North America

Till date, archaeological site L’Anse aux Meadows is considered as the only Viking site in the Western Hemisphere. Now, archaeologists have discovered another Viking site with the help of satellite imagery. They believe the discovery may unravel more about the history of Vikings.

As per historians, Vikings traveled long distance to enter North America about a thousand years ago. Discovery of the new site in North America may allow researchers to rewrite understandings about Vikings, who are famous for their fearsome conquests.

Study: Hobbit Species vanished Thousands of Years Earlier Than Previously Believed

Study: Hobbit Species vanished Thousands of Years Earlier Than Previously Believed

Extinct species Homo floresiensis discovered in Indonesia more than a decade ago vanished much earlier than previously estimated, suggests a new study. The study also stated that modern humans could be behind the extinction of this mysterious and diminutive species.

Craig Venter Institute Researchers identify Minimum Number of Genes needed for Organism to Survive

In an attempt to examine a gene’s function, researchers picked a bacterium’s DNA. The aim was to determine minimum set of genes required for life, as per the researchers.

They designed a synthetic microbe that is capable of living with just 473 genes. Compared with human genome that has over 19,000 genes, the newly developed microbe has very few genes, the minimum achieved till date. The new development could help in leading to new research in genetic sciences, said researchers at the J. Craig Venter Institute.

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