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Archive for the ‘evolution’ category: Page 78

Dec 17, 2020

Jawless lamprey takes a bite out of cancer gene evolution

Posted by in categories: biotech/medical, evolution, genetics, health

Mice, fruit flies and dogs are common creatures of laboratories across the country, valuable to researchers for their genetic proximity to humans. But what about lampreys?

A new Yale School of Public Health study has enlisted this unlikely and slimy ally in the fight against .

By carefully tracing the evolution of a select number of cancer-causing genes in a variety of species, the researchers evaluated which animals are—and are not—effective in gauging how an analog of those genes in humans can lead to cancer. What they found is surprising: such as lampreys share significant similarities in these certain genes compared to humans, while do not. Their findings, published in the journal Genome Biology and Evolution, will help molecular biologists and other scientists as they work to find potential cures to certain cancers, such as lymphoma.

Dec 17, 2020

The DNA Regions in Our Brain That Contribute to Make Us Human

Posted by in categories: biotech/medical, evolution, neuroscience

Summary: A new method identified a large set of gene regulatory regions in the brain, selected throughout human evolution.

Source: Swiss Institute of Bioinformatics.

With only 1% difference, the human and chimpanzee protein-coding genomes are remarkably similar. Understanding the biological features that make us human is part of a fascinating and intensely debated line of research. Researchers at the SIB Swiss Institute of Bioinformatics and the University of Lausanne have developed a new approach to pinpoint, for the first time, adaptive human-specific changes in the way genes are regulated in the brain.

Dec 15, 2020

Evolution of facial muscle anatomy in dogs

Posted by in category: evolution

Dogs are cool!

Sources:

- … See More.

Continue reading “Evolution of facial muscle anatomy in dogs” »

Dec 12, 2020

Yoctosecond photon pulses from quark-gluon plasmas

Posted by in categories: evolution, particle physics

Circa 2009


Present ultrafast laser optics is at the frontier between atto- and zeptosecond photon pulses, giving rise to unprecedented applications. We show that high-energetic photon pulses down to the yoctosecond time scale can be produced in heavy-ion collisions. We focus on photons produced during the initial phase of the expanding quark-gluon plasma. We study how the time evolution and properties of the plasma may influence the duration and shape of the photon pulse. Prospects for achieving double-peak structures suitable for pump-probe experiments at the yoctosecond time scale are discussed.

Dec 4, 2020

Frozen Bird Found in Siberia is 46,000 Years Old

Posted by in categories: biotech/medical, evolution, genetics

Scientists have recovered DNA from a well-preserved horned lark found in Siberian permafrost. The results can contribute to explaining the evolution of sub species, as well as how the mammoth steppe transformed into tundra, forest and steppe biomes at the end of the last Ice Age.

In 2018, a well-preserved frozen bird was found in the ground in the Belaya Gora area of north-eastern Siberia. Researchers at the Centre for Palaeogenetics, a new research center at Stockholm University and the Swedish Museum of Natural History, haves studied the bird and the results are now published in the scientific journal Communications Biology. The analyses reveals that the bird is a 46,000-year-old female horned lark.

“Not only can we identify the bird as a horned lark. The genetic analysis also suggests that the bird belonged to a population that was a joint ancestor of two sub species of horned lark living today, one in Siberia, and one in the steppe in Mongolia. This helps us understand how the diversity of sub species evolves,” says Nicolas Dussex, researcher at the Department of Zoology at Stockholm University.

Dec 2, 2020

Discovery of two-million-year-old skull in South Africa throws new light on human evolution

Posted by in category: evolution

The fossil was a male Paranthropus robustus, a species that existed alongside our early human ancestors as a ‘cousin species’.

Academics from La Trobe University’s Archaeology Department in Melbourne, Australia led the excavation and reconstruction of the large-toothed rare skull from the Drimolen Main Quarry north of Johannesburg, South Africa.

Researchers described the fossil — that was found in 2018 on South African Father’s Day (June 20) — as exciting.

Nov 26, 2020

Intelligent Life Really Can’t Exist Anywhere Else

Posted by in categories: evolution, futurism

Hell, our own evolution on Earth was pure luck.


In newly published research from Oxford University’s Future of Humanity Institute, scientists study the likelihood of key times for evolution of life on Earth and conclude that it would be virtually impossible for that life to evolve the same way somewhere else.

Continue reading “Intelligent Life Really Can’t Exist Anywhere Else” »

Nov 23, 2020

Astronomers Discover New “Fossil Galaxy” Buried Deep Within the Hidden Depths of Our Own Milky Way

Posted by in categories: evolution, space

Scientists working with data from the Sloan Digital Sky Surveys’ Apache Point Observatory Galactic Evolution Experiment (APOGEE) have discovered a “fossil galaxy” hidden in the depths of our own Milky Way.

This result, published today (November 20, 2020) in Monthly Notices of the Royal Astronomical Society, may shake up our understanding of how the Milky Way grew into the galaxy we see today.

“APOGEE lets us pierce through that dust and see deeper into the heart of the Milky Way than ever before.” —

Nov 21, 2020

Ardi and her discoverers shake up hominid evolution in ‘Fossil Men’

Posted by in category: evolution

A new book covers the big personalities, field exploits and scientific clashes behind the discovery of the hominid skeleton nicknamed Ardi.

Nov 20, 2020

Giant virus genomes discovered lurking in DNA of common algae

Posted by in categories: biotech/medical, evolution

Viral stowaways could be enhancing survival of algae, and even their evolution.

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