tag:blogger.com,1999:blog-7924237114203309871.post8796581932531022871..comments2023-10-12T05:46:19.188-07:00Comments on Darwin's Bulldogs: Why are all earthly lifeforms lefties?Anonymoushttp://www.blogger.com/profile/16397352235608677895noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7924237114203309871.post-30615374950275125492011-08-01T14:07:19.589-07:002011-08-01T14:07:19.589-07:00I'm not a scientist, so please forgive a proba...I'm not a scientist, so please forgive a probably-stupid question:<br /><br />How much of the protein that composes our bodies is exclusively left-handed? Just the genetic material, or also the tissues that get built based on instructions from left-handed genetic material?<br /><br />I'm assuming that it's just the former, and not the latter. If it were the latter, then I assume Earth organisms would only be able to productively digest left-handed protein, and that consuming the bodies of right-handed alien organisms would provide no usable proteins/amino acids.<br /><br />So, safe to say that only our genetic material is exclusively left-handed, and not tissues as well?Raphite1https://www.blogger.com/profile/04653551434755832078noreply@blogger.comtag:blogger.com,1999:blog-7924237114203309871.post-42950829914528984852011-01-19T19:22:45.143-08:002011-01-19T19:22:45.143-08:00Beautifully written. Thank you.Beautifully written. Thank you.ABKhttp://hmunca.blogspot.comnoreply@blogger.comtag:blogger.com,1999:blog-7924237114203309871.post-36285698263898027562009-08-27T12:36:41.548-07:002009-08-27T12:36:41.548-07:00(Old posting, slightly modified)
Teleology Is Uni...(Old posting, slightly modified)<br /><br />Teleology Is Universal<br />And Explains Life's Amino Acids Chirality <br /><br /><br />A. Amino Acids Chirality In Life<br />http://scienceandreason.blogspot.com/2009/04/amino-acid-chirality.html<br /><br /><br />B. Again, the probable reason for life's amino acids chirality:<br /><br />Darwinian evolution started at life's day one, with the genesis of Earth's primal organisms, the replicating oligomers, the pre-archaea genes. It started under yet-unknown energetic conditions, by a serendipitous occurrence, most probably with oligomeric RNA conformations, in sunlight-bathed soup containing all their essential molecular progenitors. These conformations happened to maintain a balance of energy in the direction of their polymerization to lengths precipitated out of their soup as determined by the nature and conditions of the soup.<br /><br />The sugars and their appended nucleotide bases, that together with the phosphates are the structural components of genes, of life's primal organisms, are chiral. There probably is an energetic advantage in homochirality and chiral homogeneity for the self-replication of these biopolymers.<br /><br />This serendipitous occurrence set up a matrix-field of energy with a potential extended between its source, on-Earth incoming energy, and the precipitating organisms, the genes. This was the genesis of the ongoing formation and maintenance of Earth's biosphere. <br /><br />And since the biosphere had thus started it could only evolve in the directions of more favorable energy balances-packages and towards stabler energy-packages conformations, in the direction of survival. Earth's biosphere embarked on the course of its evolution.<br /><br /><br />C. Some definitions, with "end" replacing dictionary's 'cause' or 'design' or 'purpose' <br /><br />- tele-, telos end<br /><br />- teleology = a doctrine explaining phenomena by final end; the fact or character attributed to nature or natural processes of being directed toward a specific end; the referral to the end of universe as an explanation of natural phenomena.<br /><br />teleonomy = the quality of survival of structure or function in living organisms due to evolutionary adaptation. <br /><br /><br />D. Teleology exist in all nature's systems, both living and nonliving. It is universal.<br /><br />The universe, with all its sub-systems, including life, is a continuously evolving fractal system, with energy as the base element of everything. Cosmic evolution is evolution of energy. At the beginning of the present cosmic cycle was the energy singularity. At its end there will be a small amount of mass and an infinite dispersion of the beginning energy. In-between, the universe undergoes continuous evolution, consisting of myriad energy-to-energy and energy-to-mass-to-energy transformations. <br /><br />Evolution ensues from and consists of systems modifications, "mutations", inherently ever more of them as more new options arise for the systems, be they non-living or living.<br /><br />Life systems, like other mass systems, are temporary packages of constrained energy. On Earth they are components of the grand, temporarily constrained, biosphere energy store. Their temporary survival 'end' is to enhence and maintain their bio matrix, the biosphere.<br /><br />Modifications of genomes functional capabilities, of genes expressions, can be explained by the<br />feedbacks they receive from their (3rd stratum) cellular organisms, feedbacks from their culture-life-experiences. The route-modification selection of a replicating gene, when it is at its alternative-splicing-steps junctions, is biased by the feedback received by the genome. THIS IS HOW LIFE EVOLUTION COMES ABOUT. <br /><br />For non-life systems there is no mediating culture. The interaction between environments and systems are direct, in the direction towards the 'end' of the present phase of the universe. <br /><br /><br />Suggesting,<br /><br />Dov Henis<br />(Comments From The 22nd Century)<br />Updated Life's Manifest May 2009 <br />http://www.physforum.com/index.php?showtopic=14988&st=480&#entry412704<br />http://www.the-scientist.com/community/posts/list/140/122.page#2321Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7924237114203309871.post-17494440182854817032009-03-16T19:29:00.000-07:002009-03-16T19:29:00.000-07:00Just something from left field:med ~ madhu ~ hunni...Just something from left field:<BR/><BR/>med ~ madhu ~ hunnig ~ honey<BR/>Russian Malay German EnglishDDedenhttps://www.blogger.com/profile/10033851770461086341noreply@blogger.com