This is a sample preface & 1st chapter of book (physical) Evolution: A Third Way? Based on the most cutting-edge biological science and older previously marginalized evolutionary theories and ideas, it presents an over-arching new synthesis of evolution.
Does this Genetically modified bird look like a shrunken dinosaur? Perhaps not, but when we talk about dinosaurs, most of us think of giant terrible beasties of huge proportions. As the article below suggests, most of the bird-like dinosaurs were rather small to begin with, but shrunk fairly rapidly when the need…
Working with Professors Joydip Mukhopadhyay and Gautam Ghosh and other colleagues from the Presidency University in Kolkata, India, the geologists found evidence for chemical weathering of rocks leading to soil formation that occurred in the presence of O2. Using the naturally occurring uranium-lead isotope decay system, which is used for age determinations on geological time-scales, the authors deduced that these events took place at least 3.02 billion years ago. The ancient soil (or paleosol) came…
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This is a close view of a benthic microbial mat community at the LaDuke hot spring in Gardiner, Montana near Yellowstone National Park, showing cyanobacteria and other chlorophototrophic bacteria.
Credit: Donald A. Bryant lab, Penn State University
“We have shown that some cyanobacteria, also called blue-green algae, can grow in far-red wavelengths of light, a range not seen well by most humans,” said Donald A. Bryant, the Ernest C. Pollard Professor of Biotechnology and a professor of biochemistry and molecular biology at Penn State. “Most cyanobacteria can’t ‘see’ this light either. But we have found a…
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Experimental biology owes much to the discovery of the freshwater polyp Hydra over 300 years ago. Hydra was first described by Antoni van Leeuwenhoek in 1702. In 1744 Abraham Trembley published a remarkable series of experiments on Hydra, the first to demonstrate regeneration, tissue transplantation and asexual reproduction in an animal. The photograph by Melanie Mikosch and Thomas Holstein shows a budding Hydra magnipapillata polyp.
Credit: Copyright Melanie Mikosch/Thomas Holstein, COS Heidelberg
The fresh-water polyp Hydra, a member of the over 600-million-year-old phylum Cnidaria, is famous for its virtually unlimited regenerative capability and hence a perfect model for molecular stem cell and regeneration research. This polyp, with its simple structure and radial symmetry, can help us understand how our body axes came to evolve. Scientists from Heidelberg and Vienna have brought this evidence to light through their research on the formation of new polyps in the Hydra through asexual reproduction.
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yes HGT (horizontal gene transfer) and epigenetics which change the expression of genes without changing the DNA code sequence itself answers a lot of questions about evolution and makes the old Darwinian tree a bit of a mess.
Two related studies led by scientists at Harvard and Stanford, also published Aug. 28 in the same issue of the journal Nature, tell a similar story: Even though humans, worms, and flies bear little obvious similarity to each other, evolution used remarkably similar molecular toolkits to shape them.
However, the same Yale lab reports in a separate paper published in the Proceedings of the National Academy of Sciences dramatic differences between species in genomic regions populated by pseudogenes, molecular fossils of working genes.
The human, worm…
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Is it a doodle, a message or a work of art?
We’ve found Neanderthal art before, such as red ochre handprints on cave walls. But this new discovery is some sort of a tic-tac-toe pattern, to which the New Scientist cheekily dubbed them a “hashtag”). The team found the carving in near to many Neanderthal tools, about 300 or so. The researchers ruled out the possibility that the engravings were accidental or from cutting meat or animal skins. Instead, they were made by repeatedly and intentionally using a sharp stone tool to etch the rock…
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