Articles tagged with Genetic Recombination
A study published in PLOS ONE estimates that both island species were isolated around the same time, approximately 250,000 years ago. The researchers suggest that a moderate-sized ancestral population could reconcile differences in gene divergence patterns among the species.
Researchers used CO-FISH to detect centromeric recombination and found 15 events per centromere, six times the rate of telomeric DNA, and 175 times genomic DNA. Methyltransferase knockdown increased recombination but also decreased centromere length due to misaligned segments.
A new analysis of the genome of St Louis encephalitis has shed light on its evolution, tracing the virus back to South America and identifying a single mutation that made it pathogenic to humans. The research suggests that population dynamics and point mutations played a key role in the virus's adaptation to humans.
New study sequenced two full FIV genomes of different lion subtypes, showing importance of whole-genome analysis. The findings provide insights into genetic determinants of pathogenicity and virulence differences between domestic cat and lion FIV.
Scientists have discovered two common gene variants that regulate recombination rate in humans, which varies between men and women. These variants enable the distribution of evolutionary work between sexes, promoting genetic diversity while maintaining genome stability.
Researchers discovered a significant amount of variation in genetic recombination events among individuals, with some hotspots being used more by one sex. The study found heritable differences in recombination rate and hotspot use, which could provide insights into the evolution of recombination rates.
Genes have been found to recognize similar patterns of chemical bases without physical contact, shedding light on the process of homologous recombination. This ability could explain how genes group together to perform key processes involved in species evolution.
A new mathematical model developed by USC College computational biologist Peter Calabrese simulates the evolution of genetic recombination hotspots in the human genome. The model reveals that hotspots are not as fixed as previously thought, but rather vary across populations and can be found in multiple ethnic groups.
Using single-molecule fluorescence resonance energy transfer (FRET), researchers observed the life cycle of RecA, a DNA recombination protein found in E. coli. They discovered that both ends of the filament continually grow and shrink, with one end growing primarily in one direction.
Researchers have discovered new details of the mechanisms employed by C. elegans to ensure accurate chromosome matching during meiosis. The study, published in Cell and Science, sheds light on the role of Pairing Centers in promoting synapsis and chromosome pairing.
A Brown University and Harvard Medical School team has revealed the crystal structure of λ-integrase, a protein responsible for site-specific recombination in lambda virus. The findings provide a major leap in understanding mobile DNA, with implications for studying viral infections and gene editing.
Researchers found that the fungal genome's sex-determining region shares similarities with the human Y chromosome, including cluster formation of functionally related genes. This discovery may provide insight into infertility in fungi and humans, as well as disease mechanisms in C. neoformans.
Researchers have identified a genetic component involved in the self-incompatibility response of plants. The discovery sheds light on how plants prevent self-pollination and could lead to more efficient methods for producing hybrid seeds, such as hand emasculation being replaced by transgenic approach.
Researchers at SLU have successfully deciphered the molecular structure of recombination protein O (RecO), crucial for accurate genomic DNA replication. This breakthrough may aid pharmaceutical researchers in developing more effective drugs and basic scientists in understanding gene function.
Researchers at Rutgers University have developed a genetic road map that identifies sources of disease by analyzing single nucleotide polymorphisms (SNPs). The map, which is the first of its kind, provides detailed information on gene interactions and will enable scientists to conduct large-scale genotyping with greater efficiency.
Scientists challenge textbook example of natural selection eliminating variation from closely linked genes; Chromosome 4 has multiple regions with varying levels of recombination. High levels of genetic diversity are found on this previously thought 'non-recombining' chromosome.
Researchers identified a hybrid gene in the 1918 flu virus that was produced from parts of two other influenza viruses through a process called recombination. This discovery suggests that the outbreak was triggered by the recombination, which increased the virus's virulence.
A new genetic variation in the calpain-10 gene has been identified as a significant contributor to type 2 diabetes. This discovery provides new insight into the origins of the disease and its impact on patients' lives, offering potential therapeutic approaches for treatment.
Researchers propose a coordinated model for DNA repair, recombination and replication processes in cell division, revealing a link between DNA replication and recombination. The study uses E. coli as a model organism to understand the role of primosome assembly proteins in restarting replication.
Researchers discovered that neighboring RAG1 and RAG2 genes are controlled by a single genetic control signal, explaining their long-lived partnership in the immune system. This finding has implications for understanding gene evolution and regulation.
Researchers at Harvard Medical School have made a groundbreaking discovery that suggests the brain's development may rely on a DNA cutting and pasting process. The study, led by Fred Alt, found that specific proteins involved in recombination are also crucial during brain development, leading to cell death in mice with genetic mutations.
Scientists at The Jackson Laboratory have cloned the gene for mouse neuromuscular degeneration, a devastating neurological disease that affects humans such as amyotrophic lateral sclerosis and spinal muscular atrophy. The discovery provides an additional tool for understanding motor neuron death and may lead to new treatments.
Researchers discovered a gene segment that can 'jump' into foreign DNA, enabling vertebrates to create millions of different antibodies. This ability is crucial for the adaptive immune system, which relies on two lines of defense to detect and destroy invaders.
Researchers have found that Sulfolobus acidocaldarius exhibits a very high rate of genetic recombination, with 95% of mutations producing recombinants. This suggests an alternative mechanism of DNA repair beyond classical recombination, which may be driven by the microbe's exposure to oxidative stress.
Researchers at University of Maryland School of Medicine discovered that mature B cells can reactivate genetic machinery to produce novel antibodies in response to antigens. This antigen-driven process enables the immune system to adapt and respond more effectively to threats, potentially leading to faster recovery for cancer patients.
A team of researchers at the University of Pennsylvania School of Medicine has determined the molecular structure of Cre recombinase, an enzyme used in genetically engineering animal models. The detailed structural picture will aid in designing better research models and provide insights into the recombination reaction.
The new map reveals hot spots for genes and a large region where DNA remains intact across generations. It also identifies variations in chemical composition along the chromosome, shedding light on X's genetic code
Researchers have found a way to reduce guesswork and errors in genetic engineering by eliminating unwanted or 'junk' genes from plant chromosomes. This new method allows for targeted gene insertion and excision, enabling more precise control over genetic transformations.