Toplam 38 içerik listeleniyor
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UW team stores digital images in DNA -- and retrieves them perfectly
Technology companies routinely build sprawling data centers to store all the baby pictures, financial transactions, funny cat videos and email messages its users hoard. But a new technique developed by University of Washington and Microsoft researchers could shrink the space needed to store digital data that today would fill a Walmart supercenter down to the size of a sugar cube. The team of computer scientists and electrical engineers has detailed one of the first complete systems to encode,...
https://www.biyologlar.com/uw-team-stores-digital-images-in-dna-and-retrieves-them-perfectly-haber-8723 -
How knots can swap positions on a DNA strand
Physicists of Johannes Gutenberg University Mainz (JGU) and the Graduate School of Excellence "Materials Science in Mainz" (MAINZ) have been able with the aid of computer simulations to confirm and explain a mechanism by which two knots on a DNA strand can interchange their positions. For this, one of the knots grows in size while the other diffuses along the contour of the former. Since there is only a small free energy barrier to swap, a significant number of crossing events have been...
https://www.biyologlar.com/how-knots-can-swap-positions-on-a-dna-strand -
Simple technology makes CRISPR gene editing cheaper
University of California, Berkeley, researchers have discovered a much cheaper and easier way to target a hot new gene editing tool, CRISPR-Cas9, to cut or label DNA. The CRISPR-Cas9 technique, invented three years ago at UC Berkeley, has taken genomics by storm, with its ability to latch on to a very specific sequence of DNA and cut it, inactivating genes with ease. This has great promise for targeted gene therapy to cure genetic diseases, and for discovering the causes of disease. The...
https://www.biyologlar.com/simple-technology-makes-crispr-gene-editing-cheaper -
Rethinking the reef
A new study by biologists at San Diego State University and Scripps Institution of Oceanography shows that inhabited coral islands that engage in commercial fishing dramatically alter their nearby reef ecosystems, disturbing the microbes, corals, algae and fish that call the reef home. The study's lead author, Linda Wegley Kelly, is a postdoctoral scholar in the lab of SDSU virologist Forest Rohwer. For the study, she looked at seawater samples collected from the surfaces of reefs surrounding...
https://www.biyologlar.com/rethinking-the-reef -
Penn bioengineers show why lab-made stem cells might fail: Errors in DNA folding
Induced pluripotent stem cells hold promise for regenerative medicine because they can, in theory, turn into any type of tissue and because they are made from a patient's own adult cells, guaranteeing compatibility. However, the technique that turns adult cells into these iPS cells is not foolproof; after reverting to their pluripotent state, these cells don't always correctly differentiate back into adult cells. Researchers from the University of Pennsylvania have now discovered one of the...
https://www.biyologlar.com/penn-bioengineers-show-why-lab-made-stem-cells-might-fail-errors-in-dna-folding -
Biodiversity: 11 new species come to light in Madagascar
Madagascar is home to extraordinary biodiversity, but in the past few decades, the island's forests and associated biodiversity have been under greater attack than ever. Rapid deforestation is affecting the biotopes of hundreds of species, including the panther chameleon, a species with spectacular intra-specific colour variation. A new study by Michel Milinkovitch, professor of genetics, evolution, and biophysics at the University of Geneva (UNIGE), led in close collaboration with colleagues...
https://www.biyologlar.com/biodiversity-11-new-species-come-to-light-in-madagascar -
A 'supergene' underlies genetic differences sexual behaviour in male ruff
The ruff is a Eurasian shorebird that has a spectacular lekking behaviour where highly ornamented males compete for females. Now two groups report that males with alternative reproductive strategies carry a chromosomal rearrangement that has been maintained as a balanced genetic polymorphism for about 4 million years. The two studies, one led by scientists at Uppsala university, are published today in Nature Genetics. Three different types of ruff males occur at the leks of this species....
https://www.biyologlar.com/a-supergene-underlies-genetic-differences-sexual-behaviour-in-male-ruff -
New insights into a virus proteome
The genome encodes the complete information needed by an organism, including that required for protein production. Viruses, which are up to a thousand times smaller than human cells, have considerably smaller genomes. Using a type of herpesvirus as a model system, the scientists of the Max Planck Institute of Biochemistry in Martinsried near Munich and their collaboration partners at the University of California in San Francisco have shown that the genome of this virus contains much more...
https://www.biyologlar.com/new-insights-into-a-virus-proteome -
Genetic 'paint box' shuffled between butterfly species to create new wing patterns
New research on butterfly genomes has revealed that the genetic components that produce different splotches of colour on wings can be mixed up between species by interbreeding to create new patterns, like a "genetic paint-box". Research on Amazonian Heliconius butterflies has shown that two of the most common colour patterns, found in combination on the wings of many Heliconius species - the dennis red patch on the base of the forewing, and the ray red streaks that fan out across the hindwing...
https://www.biyologlar.com/genetic-paint-box-shuffled-between-butterfly-species-to-create-new-wing-patterns -
Common bacteria on verge of becoming antibiotic-resistant superbugs
Antibiotic resistance is poised to spread globally among bacteria frequently implicated in respiratory and urinary infections in hospital settings, according to new research at Washington University School of Medicine in St. Louis. The study shows that two genes that confer resistance against a particularly strong class of antibiotics can be shared easily among a family of bacteria responsible for a significant portion of hospital-associated infections. Drug-resistant germs in the same family...
https://www.biyologlar.com/common-bacteria-on-verge-of-becoming-antibiotic-resistant-superbugs -
New fungi behind emerging wheat disease
Researchers have unraveled the mystery cause of the emerging wheat disease White Grain Disorder. Scientists at the Wheat Biosecurity Laboratory at The Australian National University (ANU) identified the cause of the disease when they isolated three previously undiscovered fungi from infected wheat samples and sequenced their genomes. "Until now, growers and pathologists have recognised the symptoms of White Grain Disorder, but they haven't known what causes it," said lead researcher Associate...
https://www.biyologlar.com/new-fungi-behind-emerging-wheat-disease -
The Institut Pasteur in French Guiana publishes the first complete genome sequence of the Zika virus
Having confirmed the first cases of infection in Suriname then in French Guiana, the Institut Pasteur in French Guiana has sequenced the complete genome of the
https://www.biyologlar.com/the-institut-pasteur-in-french-guiana-publishes-the-first-complete-genome-sequence-of-the-zika-virus -
Supercomputing the evolution of a model flower
Scientists using supercomputers found genes sensitive to cold and drought in a plant help it survive climate change. These findings increase basic understanding of plant adaptation and can be applied to improve crops.
https://www.biyologlar.com/supercomputing-the-evolution-of-a-model-flower -
Bumblebee genomes create a buzz in the field of pollination
Bees play a key role in our ecosystem and in the world's food supply.
https://www.biyologlar.com/bumblebee-genomes-create-a-buzz-in-the-field-of-pollination -
Octopus genome reveals cephalopod secrets
Researchers from UC Berkeley, the Okinawa Institute of Science and Technology Graduate University and the University of Chicago have sequenced and annotated the first cephalopod genome
https://www.biyologlar.com/octopus-genome-reveals-cephalopod-secrets -
Scientists sequence first ancient Irish human genomes
Excavated near Belfast in 1855, she had lain in a Neolithic tomb chamber for 5,000 years; subsequently curated in Queens University Belfast.
https://www.biyologlar.com/scientists-sequence-first-ancient-irish-human-genomes -
Scientists sequence first ancient Irish human genomes
Excavated near Belfast in 1855, she had lain in a Neolithic tomb chamber for 5,000 years; subsequently curated in Queens University Belfast.
https://www.biyologlar.com/scientists-sequence-first-ancient-irish-human-genomes -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone -
Duplicate DNA a hallmark of tick genome
Researchers sequence the genome of the Lyme-disease-causing tick and find lots of duplicative elements.
https://www.biyologlar.com/duplicate-dna-a-hallmark-of-tick-genome -
Duplicate DNA a hallmark of tick genome
Researchers sequence the genome of the Lyme-disease-causing tick and find lots of duplicative elements.
https://www.biyologlar.com/duplicate-dna-a-hallmark-of-tick-genome -
Acorn worm genome reveals gill origins of human pharynx
The acorn worm Saccoglossus kowalevskii is common in brackish, shallow water on the Atlantic coast. Its newly sequenced genome is telling biologists about the genes responsible for pharyngeal gills
https://www.biyologlar.com/acorn-worm-genome-reveals-gill-origins-of-human-pharynx -
Acorn worm genome reveals gill origins of human pharynx
The acorn worm Saccoglossus kowalevskii is common in brackish, shallow water on the Atlantic coast. Its newly sequenced genome is telling biologists about the genes responsible for pharyngeal gills
https://www.biyologlar.com/acorn-worm-genome-reveals-gill-origins-of-human-pharynx -
Red clover genome to help restore sustainable farming
Six red clover varieties with diverse architectures and traits have recently been selected as parents of the next year generation.
https://www.biyologlar.com/red-clover-genome-to-help-restore-sustainable-farming -
Red clover genome to help restore sustainable farming
Six red clover varieties with diverse architectures and traits have recently been selected as parents of the next year generation.
https://www.biyologlar.com/red-clover-genome-to-help-restore-sustainable-farming -
The corn snake genome sequenced for the first time
Wild-type corn snakes typically exhibit, over a light orange background coloration, a pattern of dark orange dorsal saddles and lateral blotches that are outlined with black
https://www.biyologlar.com/the-corn-snake-genome-sequenced-for-the-first-time -
How the ant queen gets her crown: Uncovering the evolution of queen-worker differences
Queen and worker ants develop from the same sets of genes, but end up being structurally, behaviourally, and functionally different.
https://www.biyologlar.com/how-the-ant-queen-gets-her-crown-uncovering-the-evolution-of-queen-worker-differences -
How the ant queen gets her crown: Uncovering the evolution of queen-worker differences
Queen and worker ants develop from the same sets of genes, but end up being structurally, behaviourally, and functionally different.
https://www.biyologlar.com/how-the-ant-queen-gets-her-crown-uncovering-the-evolution-of-queen-worker-differences -
Gene sequences reveal global variations in malaria parasites
Red blood cell stages of Plasmodium vivax from malaria patients in Thailand.
https://www.biyologlar.com/gene-sequences-reveal-global-variations-in-malaria-parasites -
Gene sequences reveal global variations in malaria parasites
Red blood cell stages of Plasmodium vivax from malaria patients in Thailand.
https://www.biyologlar.com/gene-sequences-reveal-global-variations-in-malaria-parasites -
Genome of 6,000-year-old barley grains sequenced for first time
Right: Photograph during excavation exhibiting excellent dry preservation of plant remains Left: A well-preserved, desiccated barley grain found at Yoram Cave
https://www.biyologlar.com/genome-of-6000-year-old-barley-grains-sequenced-for-first-time -
Genome of 6,000-year-old barley grains sequenced for first time
Right: Photograph during excavation exhibiting excellent dry preservation of plant remains Left: A well-preserved, desiccated barley grain found at Yoram Cave
https://www.biyologlar.com/genome-of-6000-year-old-barley-grains-sequenced-for-first-time -
Tardigradlar daha da tuhaflaştı: Su ayıları tüm hayvanlara en yabancı DNA’ya sahip!
Su ayıları olarak da bilinen tardigradlar, muhtemelen yeryüzünde yaşayan en tuhaf canlılar. Yaklaşık 1 mm uzunluğundaki bu mikroskobik canlılar aynı zamanda uzay koşullarında canlılıklarını sürdürebilen tek hayvan olmalarıyla biliniyor.
https://www.biyologlar.com/tardigradlar-daha-da-tuhaflasti-su-ayilari-tum-hayvanlara-en-yabanci-dnaya-sahip -
Amerikan Hamam Böceğinin Genomu Dizilendi
Güney Çin Normal Üniversitesi ve Çin Bilimler Akademisi'nde yapılan araştırmalarla ilk kez Amerikan hamam böceğinin genomu dizilenmiştir. Credit: Sheng Li
https://www.biyologlar.com/amerikan-hamam-boceginin-genomu-dizilendi -
Amerikan Hamam Böceğinin Genomu Dizilendi
Güney Çin Normal Üniversitesi ve Çin Bilimler Akademisi'nde yapılan araştırmalarla ilk kez Amerikan hamam böceğinin genomu dizilenmiştir. Credit: Sheng Li
https://www.biyologlar.com/amerikan-hamam-boceginin-genomu-dizilendi -
Tardigradların tüm hayvanlara en yabancı DNA’ya sahip oldukları anlaşıldı
Su ayıları olarak da bilinen tardigradlar, muhtemelen yeryüzünde yaşayan en tuhaf canlılar.
https://www.biyologlar.com/tardigradlarin-tum-hayvanlara-en-yabanci-dnaya-sahip-olduklari-anlasildi -
İlk taslaktan 20 yıl sonra insan Y kromozomu tamamen dizilendi.
Erkek cinsiyet özelliklerinin gelişimiyle ilişkili olan Y kromozomunun, çok sayıda tekrarlanan DNA segmenti içermesi nedeniyle dizilenmesinin oldukça zor olduğu biliniyor.
https://www.biyologlar.com/ilk-taslaktan-20-yil-sonra-insan-y-kromozomu-tamamen-dizilendi-