What'sNEW October-December 2011
Zi-Wen Li et al., "Pathogen-origin horizontally transferred genes contribute to the evolution of Lepidopteran insects" [abstract], doi:10.1186/1471-2148-11-356, v11 n356, BMC Evolutionary Biology, 12 Dec 2011. Viruses and Other Gene Transfer Mechanisms is the main related local webpage. What'sNEW about HGT |
DNA detection is effective even in populations where the animals are extremely rare. DNA traces of animals are nearly ubiquitous in the freshwater environment. These findings may have wider implications reaching disciplines far beyond threatened species monitoring. The ubiquity of animal DNA in freshwater interests us for another reason. Cosmic ancestry depends heavily on gene transfer (HGT), even affecting multicelled animals. But standard darwinism holds that gene transfer among metazoans is rare and inconsequential. Now we learn that all this DNA is freely available in the water. Here we see circumstantial evidence in favor of robust gene transfer, even among species like otters and dragonflies.
Philip Francis Thomsen et al., "Monitoring endangered freshwater biodiversity using environmental DNA" [abstract], doi:10.1111/j.1365-294X.2011.05418.x, Molecular Ecology, first published online 13 Dec 2011.
NASA and Library of Congress Establish Chair in Astrobiology, The Library of Congress, 30 Nov - 1 Dec 2011. The NASA Astrobiology Institute Virus Focus Group was one of Barry's projects, What'sNEW, 19 Oct 2003. Thanks for an alert, Elizabeth Gettins.
Chandra Wickramasinghe of the Buckingham Centre for Astrobiology makes these comments in email after an international conference on interstellar dust in Pune India. His own presentation there states the case convincingly. We hope it will be noticed. Distinguished attendees included (below, left to right) Sun Kwok the University of Hong Kong; Thomas Henning of the Max Planck Institut für Astronomie, Heidelberg; and Chandra. The conference website has links to many of the presentations. International Conference on Interstellar Dust, Molecules and Chemistry, Pune, India, 22-25 Nov 2011. Chandra Wickramasinghe, "Interstellar Extinction - A revisit" [local 77-pg, 7Mb PDF], 22 Nov 2011. Hoyle and Wickramasinghe's Analysis of Interstellar Dust is a related local webpage. Cross-Linked Hetero Aromatic Polymers in Interstellar Dust is a related reprint posted 1 May 2000. The Physical and Chemical Properties of Interstellar Dust and Dust in Comets: Possible Seeds for Life on Earth by Franz R. Krueger and Jochen Kissel is a related reprint first published in Sterne und Weltraum, May 2000. Professor Sun Kwok is quoted in What'sNEW, 27 Oct 2011.
Lynn Margulis 1938 - 2011, Nature.com, 23 Nov 2011. Lynn Margulis, Evolution Theorist, Dies at 73 by Bruce Weber, The New York Times, 24 Nov 2011. Lynn Margulis, leading evolutionary biologist, dies at 73 by Martin Weil, The Washington Post, 26 Nov 2011. "Lynn Margulis" [html], The Telegraph, 13 Dec 2011. James A. Lake, "Lynn Margulis (1938-2011)" [html], doi:10.1038/480458a, p458 v480, Nature, 22/29 Dec 2011. Moselio Schaechter, "Lynn Margulis (1938-2011)" [summary], doi:10.1126/science.1218027, p302 v335, Science, 20 Jan 2012. Why Sexual Reproduction? and Gaia are about two of Margulis's major scientific interests. 18 Apr 2011 an interview with Lynn Margulis, Discover.
ESA Picks Up Signal From Defunct Mars Probe by Daniel Clery, ScienceInsider, 23 Nov 2011. Phobos is in trouble is the beginning of the related What'sNEW article, 11-16 Nov 2011.
A similar report describes "De Novo Genesis of Enhancers in Vertebrates". Two biologists at the University of Heidelberg write, "...We show that enhancers don't have to be derived from pre-existing ones but can also appear de novo in regions of the genome that were previously not regulating gene expression. ...We predict that such a process is frequent in vertebrate genomes, making de novo generation of enhancers an important mechanism for creating variation in gene expression." They described the genes as "recycled". In standard theory, this phenomenon should be rare, because, if the genes were already programmed before their programs were deployed, there would have been no opportunity for standard darwinian trial-and-error to do the programming. (The German team supposes that the genes were originally functional but went silent for a long time.)
Evidence shows that many genes, like the de novo ones discussed here, precede their own expression. We think all genes do. And we note that software management systems, using tools like gene conversion, can keep silent genes uncorrupted over many generations. Thus, de novo genes confirm a fundamental prediction of cosmic ancestry. Dong-Dong Wu et al., "De Novo Origin of Human Protein-Coding Genes" [html], doi:10.1371/journal.pgen.1002379, v7 n11 e1002379, PLoS Genetics, online 10 Nov 2011.Michael P. Eichenlaub and Laurence Ettwiller, "De Novo Genesis of Enhancers in Vertebrates" [html], doi:10.1371/journal.pbio.1001188, v9 n11 e1001188, PLoS Biology, online 1 Nov 2011. Human Genome Search... is a related local webpage. Metazoan Genes Older Than Metazoa? is a related local webpage. A Wordcount for Comparison discusses de novo and other paths of gene "origination." Conserved Non-Genic Sequences is a related local webpage. Three New Human Genes is about de novo genes in humans and elsewhere. Viruses... has very many examples of acquired genes. What'sNEW about HGT |
Thanks for a facebook alert, David Darling. More about Phobos, What'sNEW, 25-28 Nov 2011.
Phobos-Grunt flight timeline on RussianSpaceWeb.com.
...Russian Phobos Probe Stranded in Orbit by Daniel Clery, ScienceInsider, 9 Nov 2011. Phobos-Grunt homepage on RussianSpaceWeb.com. Phobus-Grunt..., an earlier What'sNEW article with more about the mission, 12 Jul 2009.
Why Chlamydomonas has these genes is a complete mystery for standard theory. Apparently they, and many other genes, existed long before the features they encode. If so, there was no opportunity for trial-and-error to compose them. In response, mainstream theorists suggest that the puzzling genes originally served other purposes, but, luckily, also happen to encode new metazoan functions. Is this credible? We think genes come first, before the earthly evolution of the features they encode. Advanced genes in simple organisms confirm a basic prediction of cosmic ancestry.
From Simple To Complex by Jef Akst, The Scientist, 1 Jan 2011.
Interestingly, the proposed complex organics are very similar to those found in carbonaceous meteorites like Murchison. The presence of insoluble organic matter in meteorites is evidence that complex organic solids form in nature with no difficulty. The fact that insoluble organic matter and circumstellar dust have similar chemical structures offers the possibility that Solar System organics may have a stellar connection. The reaction of mainstream science is to propose the existence of a previously unsuspected chemistry that can produce complex organics in space. The team's discovery suggests that complex organic compounds can be synthesized in space even when no life forms are present. But complex organics definitely can been made by life. Not just theoretically. This is possible!
Sun Kwok and Yong Zhang, "Mixed aromatic–aliphatic organic nanoparticles as carriers of unidentified infrared emission features" [abstract], doi:10.1038/nature10542, Nature, online 26 Oct 2011.
The study also showed that the new genes evolved significantly faster than the average rate, supporting the case that "new genes may in general be subject to positive selection." And earlier new genes probably had similar significance in brain development for chimps, orangutans and Rhesus monkeys, they conclude (see figure). The authors report that the new brain-development genes must have "originated" in each lineage after it diverged from its evolutionary predecessors. They explain, "...We dated their originations by inferring the presence and absence of orthologs along the vertebrate phylogenetic tree...." This method reveals that their language is misleading, because nothing in their data shows that the genes ever "originated" at all, only that they were absent until they were present. Perhaps instead they arrived. In any case, we wish that precision in language were more strictly observed. Science requires it.
Zhang YE, Landback P, Vibranovski MD, Long M, "Accelerated Recruitment of New Brain Development Genes into the Human Genome" [html], doi:10.1371/journal.pbio.1001179, PLoS Biol 9(10): e1001179, online 18 Oct 2011.
Michiel R. Hogerheijde et al., "Detection of the Water Reservoir in a Forming Planetary System" [abstract], doi:10.1126/science.1208931, p338-340 v334, Science, 21 Oct 2011.
The voice of science: let's agree to disagree, doi:10.1038/478007a, NatureNews, online 5 Oct 2011.
Brig Klyce and Chandra Wickramasinghe, "Creationism, Neo-Darwinism and Panspermia" [local pdf], Journal of Cosmology, online 11 Oct 2011. Comparing Darwinism, Creationism/ID and Cosmic Ancestry is a related local webpage. Evolution versus Creationism is a related local webpage. Thanks for a heads up, Ronnie McGhee.
Milton Wainwright, Sulamain Aharbi and Khalid Alabri, "Panspermia–Nature's Exercise in Microbial Cultivation on a Vast Scale" [6-page pdf], Journal of Cosmology, online 9 Oct 2011. Introduction: More Than Panspermia is a related local webpage. Panspermia Asks New Questions lists other kinds of panspermia.
"Our findings suggest that the V-H+PPases, which are universally distributed and tightly associated with the acidocalcisome, originated prior to the divergence of the three superkingdoms." (Actually, the findings say nothing about the proteins' origin, but indicate only their prior existence. We wish this distinction were not overlooked. Science requires precision.)If a protein with a domain of 57 amino acids that is highly conserved across life's kingdoms existed before there were cells, it presents a big problem for darwinism. Other lines of evidence also point to genetic programs that existed before they were expressed on Earth — again problematic. In fact, many phylogenomic analyses like this one are finding "early complexity" everywhere. But darwinian origin-of-life theory requires simplicity in the deepest past — increasing complexity should come only later. Neo-darwinism requires genetic programs that originate by trial-and-error during many generations of cellular reproduction. How is early complexity possible without cells? In cosmic ancestry, how genetic programs originate is an unwarranted question. It seeks to explain phenomena that are not observed.
Manfredo J Seufferheld et al., "Evolution of vacuolar proton pyrophosphatase domains and volutin granules: clues into the early evolutionary origin of the acidocalcisome" [abstract], doi:10.1186/1745-6150-6-50, v6 n50, Biology Direct, 5 Oct 2011. While most of the discharge escapes, eventually to Saturn's outermost ring, an estimated micrometer per year falls back onto Enceladus's surface. To acculumate to its estimated thickness of 100 meters, it must have been falling for about 100 million years. The likeliest source for Enceladus's plumes is an ocean under the surface, heated above the melting point. A liquid ocean that has persisted for that long may well contain life. Other evidence also points to life there.
P. Schenk, J. Schmidt and O. White, "The Snows of Enceladus" [abstract], EPSC Abstracts, v6, EPSC-DPS2011-1358, online Oct 2011. | ||||||||||||||||||||||||||
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