http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/ Mon, 22 Apr 2013 21:34:00 +0000 hourly 1 http://wordpress.org/?v=3.4.2 http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/#comment-12223 Enrique Rewald Thu, 19 Jan 2012 14:48:12 +0000 http://blogs.discovermagazine.com/80beats/?p=3674#comment-12223 Can an evolutionary process become reversed? No doubt that “Dollo’s Law” at the molecular level requires renewal. Accordingly, the stock of a given protein depends on suitable feedback. When lacking, it is to suppose that the particular function cannot be maintained – thus, a ‘two way street’ is to consider as part of evolution. In other words, survival in overcrowded urbanizations requires an adaptation that the progress of hygiene failed to assure. Accordingly, a two way evolution cannot be considered out of question, it may depend on proper stimulation. Can an evolutionary process become reversed? No doubt that “Dollo’s Law” at the molecular level requires renewal. Accordingly, the stock of a given protein depends on suitable feedback. When lacking, it is to suppose that the particular function cannot be maintained – thus, a ‘two way street’ is to consider as part of evolution. In other words, survival in overcrowded urbanizations requires an adaptation that the progress of hygiene failed to assure. Accordingly, a two way evolution cannot be considered out of question, it may depend on proper stimulation.

]]> http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/#comment-12222 Fat kid Wed, 30 Sep 2009 17:18:29 +0000 http://blogs.discovermagazine.com/80beats/?p=3674#comment-12222 Think of adaptation as a ripple instead of a line. Ennervation broadcasts outward in all directions, not just up or down. Think of adaptation as a ripple instead of a line. Ennervation broadcasts outward in all directions, not just up or down.

]]> http://blogs.discovermagazine.com/80beats/2009/09/29/for-proteins-evolution-is-a-one-way-street/#comment-12221 YouRang Wed, 30 Sep 2009 14:38:34 +0000 http://blogs.discovermagazine.com/80beats/?p=3674#comment-12221 Hmm. They don't seem to have tried going just part way back to see if there is any difference in those 5 non-functioning sites. I.e. maybe there is no evolutionary drive to change those 5 at the present configuration ; but what would happen if they had changed just 1 and then returned some of the 5, then just 2 then just 3 ... of the 7 crucial changes? Maybe there would have been evolutionary advantages for the 5 to go back tat those points. And, the question remains: At how many returned functional amino acids would you get a dead protein? And hence, (call that number N) if you had just changed N-1 proteins, would there have been an evolutionary advantage? Hmm. They don’t seem to have tried going just part way back to see if there is any difference in those 5 non-functioning sites. I.e. maybe there is no evolutionary drive to change those 5 at the present configuration ; but what would happen if they had changed just 1 and then returned some of the 5, then just 2 then just 3 … of the 7 crucial changes? Maybe there would have been evolutionary advantages for the 5 to go back tat those points. And, the question remains: At how many returned functional amino acids would you get a dead protein? And hence, (call that number N) if you had just changed N-1 proteins, would there have been an evolutionary advantage?

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