Tag: DNA
![[Left] Gene duplication results in paralog-specific divergence of ancient CNSs. [Right] CNSs identified within experimentally validated CREs. (A-F) -- Science](https://astrobiology.newspackstaging.com/wp-content/uploads/2026/03/300-million-years.png)
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Desert Worlds, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Mars, Microbiology & Virology
Growth Of Microorganisms In A Martian Regolith Simulant At Reduced Water Activity
Posted inAI - Data - Apps - Cybernetics, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Citizen Science / Open Science, Commercial & Private Sector, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Planetary Protection & Biosafety
With Evo 2, AI Can Model And Design The Genetic Code For All Domains Of Life
![Kinetic processes of the strand-based RNA reactor model [12,13,15] and their projection onto motif kinetics. We consider heteropolymer strands consisting of the two complementary nucleotides X and Y, which could represent RNA or DNA nucleotides. (a) Schematic of the reactions within the strand reactor, including hybridization, dehybridization, templated ligation, and cleavage of oligonucleotide strands. Strands that are not covalently linked are separated by small gaps; four-nucleotide motifs, including 3′ or 5′ ends, are highlighted in green. In templated ligation, a 3′- and a 5′-end motif build a six-nucleotide motif that contains three overlapping four-nucleotide motifs. (b) At the level of sequence motifs, the kinetics are based on motif production and motif breakage reactions. In four-nucleotide motifs, strand ends are marked with 3′ or 5′, respectively. Templated ligation generates longer strands containing additional motifs, thereby contributing to motif production, while strand cleavage leads to to motif breakage. Hybridization is not explicitly represented in the motif-level description; instead, it is implicitly incorporated into the rate constants for motif production and breakage by assuming a hybridization-dehybridization equilibrium and deducing the corresponding dissociation constants. -- Physical Review E](https://astrobiology.newspackstaging.com/wp-content/uploads/2026/03/Sequence-Motif-Dynamics.png)
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Polar / Alpine Expeditions, Sample Return
