• We analyze genome-wide polymorphism data from about 40 West Eurasian groups to show that almost all Southern Europeans have inherited 1%-3% African ancestry with an average mixture date of around 55 generations ago, consistent with North African gene flow at the end of the Roman Empire and subsequent Arab migrations. (plos.org)
  • We also showcase an example application to an Antirrhinum majus (snapdragon) flower-color hybrid zone, where we do not detect any signal of a strong genome-wide barrier to gene flow. (genetics.org)
  • However, they are completely different in their purposes, as gene therapy aims to cure a defect in cells, and transgenesis seeks to produce a genetically modified organism by incorporating the specific transgene into every cell and changing the genome. (wikipedia.org)
  • Compared to smaller microsporidian genome, Gene density is rather low in H. tvaerminnensis but variable. (wikipedia.org)
  • Along with their genes, the migrants brought different tool-making techniques and the ancestors of the dingo, researchers say1. (blogspot.com)
  • The gradient of North African ancestry accounts for previous observations of low levels of sharing with Sub-Saharan Africa and is independent of recent gene flow from the Near East. (pnas.org)
  • PopCOGenT measures recent gene flow or gene transfer between closely related genomes. (mit.edu)
  • This technique is routinely used to introduce human disease genes or other genes of interest into strains of laboratory mice to study the function or pathology involved with that particular gene. (wikipedia.org)
  • In 1987, Plant Genetic Systems (Ghent, Belgium), founded by Marc Van Montagu and Jeff Schell, was the first company to genetically engineer insect-resistant (tobacco) plants by incorporating genes that produced insecticidal proteins from Bacillus thuringiensis (Bt). (wikipedia.org)
  • Mutations result in different forms of the same gene. (khanacademy.org)
  • Among offspring there are variations of genes due to the introduction of new genes via random changes called mutations or via reshuffling of existing genes during sexual reproduction. (wikipedia.org)
  • This difference has been attributed to postglacial expansions, the demic diffusion of agriculture from the Near East, and gene flow from Africa. (pnas.org)
  • however, we focus on testing a hypothesis of gene flow from Africa to Europe, which has received the least amount of attention and may be the easiest to detect due to the recent time frame of the proposed demographic event. (pnas.org)
  • This thesis illustrates the effects of environmental factors on pollen performance and its importance on gene flow. (lu.se)
  • Because pollen performance influences gene flow, an understanding of the factors affecting pollen performance is fundamental when conducting risk assessment studies. (lu.se)
  • It has been known to slow local adaptation by introducing foreign, unadapted genotypes (known as gene swamping). (wikipedia.org)
  • For many halobacterial groups the consensus phylogenetic signal derived from intein sequences is compatible with vertical inheritance or with a strong gene transfer bias creating these clusters. (frontiersin.org)
  • A sample of mitochondrial DNA sequences revealed that at least four female mice must have founded the Waikawa population, but that gene flow between island and mainland mice is limited. (newzealandecology.org)
  • The population is so strongly isolated that gene flow is not a possibility leading to high occurrences of inbreeding. (wikipedia.org)
  • To combat this, scientists used biolistics to insert the daffodil phytoene synthase gene into Asia indigenous rice cultivars. (wikipedia.org)
  • The second hypothesis is that gene flow from the Near East, associated with the demic diffusion of agriculture, differentially affected geographic regions and in particular introduced additional genetic diversity to southeastern Europe ( 6 , 7 ). (pnas.org)
  • Microbes tend to reproduce asexually, simply splitting themselves in two rather than combining their genes with other individuals to produce offspring. (mit.edu)
  • All individuals have hereditary material in the form of genes received from their parents, which they pass on to any offspring. (wikipedia.org)