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January 30, 2018 | You May Soon Be Able to Regrow an Arm or Leg?

Martin Armstrong

Martin Arthur Armstrong is the former chairman of Princeton Economics International Ltd. He is best known for his economic predictions based on the Economic Confidence Model, which he developed.

The Mexican axolotl salamander can regrow lost limbs in a matter of weeks which includes the bones, muscles, nerves and the whole enchilada. When scientists sought to map its DNA to figure out how it does it, to their shock, it turned out to be more than 10 times bigger than that of human DNA. Indeed, it had 32 billion base pairs of DNA making it the largest genome ever sequenced, according to Nature.

The project has taught us a few new lessons. A gene called PAX3, was previously considered to be essential to the development of an organism. This gene was completely missing from the genome. Instead, the related gene PAX7 appears to have taken over those critical functions. What they discovered was several genes unique to axolotls and other amphibians that are linked to regeneration.

Well, they may be still decades away from regrowing limbs, but sequencing the axolotl genome was a giant step forward for mankind in decoding how this ability to regrow limbs can evolve and function. It may also lead to the development of new methods to heal wounds faster.

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January 30th, 2018

Posted In: Armstrong Economics

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