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Archive for the ‘evolution’ category: Page 140

May 31, 2016

Gene Duplication: New Analysis Shows How Extra Copies Split the Work

Posted by in categories: biotech/medical, evolution

Word cloudThe human genome contains more than 20,000 protein-coding genes, which carry the instructions for proteins essential to the structure and function of our cells, tissues and organs. Some of these genes are very similar to each other because, as the genomes of humans and other mammals evolve, glitches in DNA replication sometimes result in extra copies of a gene being made. Those duplicates can be passed along to subsequent generations and, on very rare occasions, usually at a much later point in time, acquire additional modifications that may enable them to serve new biological functions. By starting with a protein shape that has already been fine-tuned for one function, evolution can produce a new function more rapidly than starting from scratch.

Pretty cool! But it leads to a question that’s long perplexed evolutionary biologists: Why don’t duplicate genes vanish from the gene pool almost as soon as they appear? After all, instantly doubling the amount of protein produced in an organism is usually a recipe for disaster—just think what might happen to a human baby born with twice as much insulin or clotting factor as normal. At the very least, duplicate genes should be unnecessary and therefore vulnerable to being degraded into functionless pseudogenes as new mutations arise over time.

An NIH-supported team offers a possible answer to this question in a study published in the journal Science. Based on their analysis of duplicate gene pairs in the human and mouse genomes, the researchers suggest that extra genes persist in the genome because of rapid changes in gene activity. Instead of the original gene producing 100 percent of a protein in the body, the gene duo quickly divvies up the job [1]. For instance, the original gene might produce roughly 50 percent and its duplicate the other 50 percent. Most importantly, organisms find the right balance and the duplicate genes can easily survive to be passed along to their offspring, providing fodder for continued evolution.

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May 28, 2016

The Evolutionary Argument Against Reality

Posted by in categories: evolution, neuroscience, quantum physics

Interesting.


The cognitive scientist Donald Hoffman believes that evolution and quantum mechanics conspire to make objective reality an illusion.

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May 25, 2016

Scientists Unearth Key Evolutionary Link in Proteins

Posted by in category: evolution

Researchers recently made an important discovery in protein science that will advance our understanding of the inner workings of cells. In an article published in Scientific Reports, the team said they found a critical evolutionary link between a protein’s structure and its function.

Like tiny molecular machines, proteins handle a variety of functions from transporting chemicals to breaking food down into nutrients. The vast range of protein function is possible because of their unique gene-encoded sequence of amino acids, which affects the three-dimensional shape that folded protein chains adopt.

To better understand them, researchers have sequenced and resolved a huge number of protein structures. Currently, the Protein Data Bank includes 110,000+ structures—far more than the number with known functions. Powerful bioinformatics tools assist in making correlations between the shape and purpose of a protein, but what’s been missing is a direct structure-function link, tantamount to a Rosetta stone-like key.

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May 25, 2016

4 Things to Consider Before Turning Over your Business to Bots

Posted by in categories: business, evolution, robotics/AI

Why the bot evolution must be human-led.

By Rob LoCascio.

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May 25, 2016

The quantum world view and vedanta

Posted by in categories: evolution, quantum physics

Luv this article (science meets philosophical theory on the evolution of science); reminds me of an article that one of my Quantum friends shared yesterday on Linkedin Pulse.


Science is the biggest enterprise that man ever created. Of all the living things on this planet, man is the only one that seems to have started thinking about how this world works. To understand that he started this new venture, called Science, which was originally meant just to understand how this world works. Some exceptionally brilliant minds did accidentally stumble upon some understanding of the world’s laws like gravity, buoyancy, and others in the west while Indian sages had realised this much earlier.

Next step was to find out how the world works by doing some experiments. That was the stage when the Churches started obstructing “Science” as this kind of scientific enquiry, the Church felt, might interfere with religious beliefs. That is where the first conflict between religion and science started. The fall out was that scientists subconsciously developed an aversion to the God concept in religion and thus God was kept out of the scientific realm. Let us, therefore, think from now on. Science, then, was more of a hobby for the well to do. The leading lights of that generation were Isaac Newton and Albert Einstein. There were a host of others but less illustrious than these two. Newton’s Laws of deterministic predictability and Einstein’s laws of relativity together founded a world view of “space-time” constraints where everything else out with this space time module was rejected.

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May 24, 2016

US biochemist wins award for rewriting DNA to mimic evolution

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

US biochemical engineer Frances Arnold on Tuesday won a million-euro technology prize in Finland for her work on “directed evolution”, a method of rewriting DNA to improve medicines and develop green fuels.

“Frances Arnold receives the 2016 Millennium Technology Prize in recognition of her discoveries that launched the field of ‘directed evolution’, which mimics natural evolution to create new and better proteins in the laboratory,” the Technology Academy Finland, which awards the prize at two-year intervals, said in a statement.

Arnold, 59, who is a professor of chemical engineering at California Institute of Technology, said her work made it possible to “solve human problems”, such as replacing toxic chemicals like fossil fuels.

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May 19, 2016

Multicellular Life Was Caused By The Same Gene That Suppresses Cancer

Posted by in categories: biotech/medical, evolution

Biologists have identified the one gene that caused the evolution of single-celled organisms into multicellularity, debunking previous theories that several genes were at play. The gene retinoblastoma is also the same gene that is found to be defective in cancer patients, and suppresses tumors.

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May 16, 2016

Meet George Church, the brash biologist out to upend evolution

Posted by in categories: biotech/medical, evolution, life extension

George Church is pushing the boundaries of science!


Harvard biologist George Church wants to reverse aging, reanimate a mammoth, and build an entire human genome from scratch. What makes him tick?

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May 9, 2016

Artificial Intelligence Evolution: Future AI Technologies To Make AI Obsolete And Intertwine Physical, Digital Realities?

Posted by in categories: evolution, robotics/AI, singularity

The troubling piece of this article is that the article leaves out how the underlying technology will need to change in order for AI to truly intertwine with humans. AI in the existing infrastructure and digital technology with no support of BMI, microbots, etc. will not evolve us to Singularity by itself and without changes to the existing digital landscape.


As artificial intelligence continuously evolves, the future of AI is also becoming more significantly challenging to perceive and comprehend for humans.

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May 5, 2016

Rise Of The Machines (Part 2): Artificial Intelligence And Bots Promise To Disrupt

Posted by in categories: evolution, robotics/AI

(Source: Jimmy Pike & Christopher Wilder ©Moor Insights & Strategy)

Microsoft and Facebook recently announced how they plan to drive leadership in the digital transformation and cloud market: bots. As more companies—especially application vendors—begin to drive solutions that incorporate machine learning, natural language, artificial intelligence, and structured and unstructured data, bots will increase in relevance and value. Google’s Cloud Platform (GCP) and Microsoft see considerable opportunities to enable vendors and developers to build solutions that can see, hear and learn as well as applications that can recognize and learn from a user’s intent, emotions, face, language and voice.

Bots are not new, but they have evolved over time through the evolution of artificial intelligence (AI), machine learning, ubiquitous connectivity and increases in data processing speeds. In the mid-1990s, the first commercial bots were developed. For example, I was on the ground floor for the first commercial chat providers called ichat. As with many disruptive media-based technologies, as was the case with ichat, early adopters tend to be the darker side of the entertainment industry. These companies saw a way to get website visitors to stay online longer by having someone to interact with their guests at 3AM. Out of this necessity, chatbots were developed. Thankfully, the technology has evolved and now bots are mainstream and are being used to helping people perform simple tasks and interact with service providers.

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