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Do Genes Switch Between Opposing DNA Strands For Adaptive Purposes?

In recent decades biologists have discovered that organisms possess a variety of adaptation mechanisms far more sophisticated than ever imagined. Some of these mechanisms are regulatory in that they influence which genes are used at a given time. Other mechanisms change the genes themselves by mutating the DNA sequences. These adaptive mutations respond to the current environmental challenge and such findings contradict contemporary evolution’s view that mutations are blind to need and are preserved only by the action of natural selection. Now, new research suggests yet another adaptive mutation mechanism.  Read more

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One Response to Do Genes Switch Between Opposing DNA Strands For Adaptive Purposes?

  1. OT: Speed Test of Quantum Versus Conventional Computing: Quantum Computer Wins – May 8, 2013
    Excerpt: quantum computing is, “in some cases, really, really fast.”
    McGeoch says the calculations the D-Wave excels at involve a specific combinatorial optimization problem, comparable in difficulty to the more famous “travelling salesperson” problem that’s been a foundation of theoretical computing for decades.,,,
    “This type of computer is not intended for surfing the internet, but it does solve this narrow but important type of problem really, really fast,” McGeoch says. “There are degrees of what it can do. If you want it to solve the exact problem it’s built to solve, at the problem sizes I tested, it’s thousands of times faster than anything I’m aware of. If you want it to solve more general problems of that size, I would say it competes — it does as well as some of the best things I’ve looked at. At this point it’s merely above average but shows a promising scaling trajectory.”
    http://www.sciencedaily.com/re.....122828.htm

    which goes a long way towards explaining how this is possible:

    Quantum Dots Spotlight DNA-Repair Proteins in Motion – March 2010
    Excerpt: “How this system works is an important unanswered question in this field,” he said. “It has to be able to identify very small mistakes in a 3-dimensional morass of gene strands. It’s akin to spotting potholes on every street all over the country and getting them fixed before the next rush hour.” Dr. Bennett Van Houten – of note: A bacterium has about 40 team members on its pothole crew. That allows its entire genome to be scanned for errors in 20 minutes, the typical doubling time.,, These smart machines can apparently also interact with other damage control teams if they cannot fix the problem on the spot.
    http://www.sciencedaily.com/re.....123522.htm

    Of note: DNA repair machines ‘Fixing every pothole in America before the next rush hour’ is analogous to the traveling salesman problem. The traveling salesman problem is a NP-hard (read: very hard) problem in computer science; The problem involves finding the shortest possible route between cities, visiting each city only once. ‘Traveling salesman problems’ are notorious for keeping supercomputers busy for days.

    NP-hard – examples
    http://en.wikipedia.org/wiki/NP-hard#Examples

    and yes, the mechanism for quantum computation in DNA is present:

    Quantum Information/Entanglement In DNA – Elisabeth Rieper – short video
    http://www.metacafe.com/watch/5936605/

    Quantum entanglement between the electron clouds of nucleic acids in DNA – Elisabeth Rieper, Janet Anders and Vlatko Vedral – February 2011
    http://arxiv.org/PS_cache/arxi.....4053v2.pdf

    In the following article, Dr. Hameroff expands on the quantum computation aspect of Rieper, Anders and Vedral paper:

    Is DNA a quantum computer? Stuart Hameroff
    Excerpt: DNA could function as a quantum computers with superpositions of base pair dipoles acting as qubits. Entanglement among the qubits, necessary in quantum computation is accounted for through quantum coherence in the pi stack where the quantum information is shared,,,
    http://www.quantumconsciousnes.....puter1.htm

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