Movement of rivers, mountains, oceans and sediment nutrients at the geological timescale are the central drivers of Earth’s biodiversity, new research published today in Nature has revealed.
evolution
Posted inHabitable Zones, Imaging & Spectroscopy, Origin & Evolution of Life, Plant Biology, Press Release, Proxima Centauri, Space Agriculture, TRAPPIST-1
A Spectrum Of Possibilities: Insights Into The Evolution Of Far-red Light Photosynthesis
A collaborative study led by Dr. Christopher Gisriel at Yale University and Dr. Tanai Cardona at Queen Mary University of London, published in Frontiers in Plant Science, offers new insight […]
Posted inBiophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Press Release
Unlocking Long-term Genetic Memory: Dormant Bacterial Spores Offer Key Insights Into Evolutionary Survival Strategies
A recent study spearheaded by Prof. Sigal Ben Yehuda and her team at Hebrew University has unveiled a captivating facet of bacterial dormancy. This research illuminates the mechanism through which […]
![Type II tRNA evolved via RNA ligation and a 9 nt internal deletion within ligated 3′- and 5′-acceptor stems [42]. Also, 3 31 nt minihelices (one D loop minihelix (magenta 17 nt core) and two anticodon stem-loop-stem minihelices (blue 17 nt core)) were fused by ligation for minihelix replication. The 93 nt tRNA precursor was processed by an internal 9 nt deletion (see below) within fused 3′-acceptor (yellow) and 5′-acceptor (green) stems. In the type II tRNA structure, the red arrow indicates the fusion of the magenta segment (17 nt D loop minihelix core; UAGCC repeat) and the green segment (5′-acceptor stem fragment; initially GGCGG). Abbreviations: SLS) stem-loop-stem; Ac) anticodon. Molecular graphics were created using ChimeraX [43]. -- Life](https://i0.wp.com/astrobiology.com/wp-content/uploads/2023/11/The331NucleotideMinihelix.png?resize=1200%2C720&ssl=1)
Posted inGenomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Status Report
The 3 31 Nucleotide Minihelix tRNA Evolution Theorem and the Origin of Life
There are no theorems (proven theories) in the biological sciences. We propose that the 3 31 nt minihelix tRNA evolution theorem be universally accepted as one.
Posted inAI - Data - Apps - Cybernetics, Biophysics, Gaia - Planetary Perspectives, Origin & Evolution of Life, Status Report
Does Gaia Play Dice?: Simple Models Of Non-Darwinian Selection
In this paper we introduce some simple models, based on rolling dice, to explore mechanisms proposed to explain planetary habitability.
Posted inGenomics, Proteomics, Bioinformatics, Microbiology & Virology, Press Release
Bacteria-virus Arms Race Provides Rare Window Into Rapid And Complex Evolution
As conceived by Charles Darwin in the 1800s, evolution is a slow, gradual process during which species adaptations are inherited incrementally over generations. However, today biologists can see how evolutionary […]
Posted inBiosignatures & Paleobiology, Fossils & Paleontology, Microbiology & Virology, Origin & Evolution of Life, Plant Biology, Press Release
Bizarre New Fossils Shed Light On Ancient Plankton
A scientist from the University of Leicester has discovered a new type of fossil that reveals life in the oceans half a billion years ago.
Posted inBiogeochemical Cycles & Geobiology, Biophysics, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life, Press Release
New “Assembly Theory” Unifies Physics And Biology To Explain Evolution And Complexity
An international team of researchers has developed a new theoretical framework that bridges physics and biology to provide a unified approach for understanding how complexity and evolution emerge in nature. […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Origin & Evolution of Life, Press Release
Extreme Heat Is Likely To Wipe Out Earth’s Mammals In The Distant Future
A new study shows unprecedented heat is likely to lead to the next mass extinction since the dinosaurs died out, eliminating nearly all mammals in some 250 million years time.
Posted inAstrobiology (general), Origin & Evolution of Life, Status Report
What It Takes To Solve The Origin(s) Of Life: An Integrated Review Of Techniques
Understanding the origin(s) of life (OoL) is a fundamental challenge for science in the 21st century. Research on OoL spans many disciplines, including chemistry, physics, biology, planetary sciences, computer science, […]