Genomes, as physical systems, comprise the complete set of nucleic acid molecules (typically DNA, or RNA in some viruses) that encode the hereditary information of an organism, including all chromosomes and extrachromosomal genetic elements. They are organized into linear or circular polymers of nucleotides, with specific higher-order structures such as chromatin in eukaryotes or nucleoid organization in prokaryotes. At the physical level, genomes exhibit defined sequence composition, length, and structural features (e.g., replication origins, regulatory regions, repetitive elements) that collectively determine their stability, replication dynamics, mutational patterns, and interactions with cellular molecular machinery.
Wheat has a very large and complex genome. Researchers have found that different varieties can use their genes in different ways. By studying RNA—the molecules that carry out instructions from DNA—researchers can see which ...
Molecular & Computational biology
Oct 6, 2025
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Our ancient past isn't always buried history. When it comes to our DNA, nearly 9% of the human genome is made up of leftover genetic material from ancient viruses (called endogenous retroviruses or ERVs) that infected our ...
Researchers at Integra Therapeutics, in collaboration with the Pompeu Fabra University (UPF) Department of Medicine and Life Sciences (MELIS) and the Center for Genomic Regulation (CRG), have designed and experimentally validated ...
Biotechnology
Oct 2, 2025
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180
By making the world's microbial DNA easier to explore, a new sequence alignment tool, LexicMap, lets scientists search for a DNA sequence against millions of bacterial and archaeal genomes in minutes, helping researchers ...
Biotechnology
Sep 30, 2025
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23
Researchers at Duke University used CRISPR technologies to discover previously unannotated stretches of DNA in the "dark genome" that are responsible for controlling how cells sense and respond to the mechanical properties ...
Cell & Microbiology
Sep 26, 2025
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62
For decades, scientists have known that bacteria can exchange genetic material, in a process called horizontal gene transfer. This allows bacteria to rapidly evolve new traits, such as antibiotic resistance. A new study, ...
Evolution
Sep 25, 2025
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26
For decades, gene-editing science has been limited to making small, precise edits to human DNA, akin to correcting typos in the genetic code. Arc Institute researchers are changing that paradigm with a universal gene editing ...
Biotechnology
Sep 25, 2025
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134
Scientists from James Cook University have developed a new computer tool that reveals layers of gene activity that were previously invisible, opening fresh possibilities for understanding health and disease.
Biotechnology
Sep 25, 2025
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When scientists want to trace how a species has changed over time—and predict its prospects for survival—they turn to DNA. But what if the genetic map guiding them belongs to the wrong animal?
Plants & Animals
Sep 22, 2025
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71
A research team led by Prof. Wang Yanli from the Institute of Biophysics of the Chinese Academy of Sciences has revealed the structure and mechanism of a highly active Type II-D Cas9, offering a promising new tool for genome ...
Biotechnology
Sep 22, 2025
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