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  • populations
  • 3) sampled healthy individuals from two freshwater bodies: the Mississipi River and the Great Lakes , and created two genetic lineages by having both populations isolated and reproducing in experimental ponds. (conservationbytes.com)
  • Dick Frankham (one of our collaborators) has quantified that the probability of outbreeding depression increases when mixing takes place between ( i ) different species, ( ii ) conspecifics adapted to different habitats, ( iii ) conspecifics with fixed chromosomal differences, and ( iv ) populations free of genetic flow with other populations for more than 500 years (2). (conservationbytes.com)
  • The adults migrate from the Pacific to their native river where they spawn two years after birth, with the particularity that there are two strict broodlines that spawn in either even or odd year - that is, the same species in the same river, but with a lack of genetic flow between populations. (conservationbytes.com)
  • Severe bottlenecks are expected to lead to increased inbreeding depression and the loss of genetic diversity, and hence reduce the long-term viability of postbottlenecked populations. (canterbury.ac.nz)
  • I therefore experimentally tested whether reciprocal translocations between different inbred populations could be an alternative technique to mitigate the negative effects of inbreeding and restore levels of genetic variation once a species or population has passed through a bottleneck. (canterbury.ac.nz)
  • The results of this experiment suggest that inbred populations can be used as donors to reduce the effects of severe population bottlenecks and 'rescue' an endangered species from inbreeding depression but that the effect is strongest if there are some initial genetic differences between donor populations. (canterbury.ac.nz)
  • To confirm whether 'genetic rescue' through the use of inbred populations can be used in a free-living animal, I repeated the above experiment in a natural setting by conducting reciprocal translocations between two severely bottlenecked and isolated South Island robin Petroica australis populations. (canterbury.ac.nz)
  • Similarly, allelic richness increased significantly in both populations within the first year after the translocation. (canterbury.ac.nz)
  • Understanding the genetic architecture of phenotypic plasticity is required to assess how populations might respond to heterogeneous or changing environments. (uwindsor.ca)
  • Here, we use the North Carolina II breeding design and translocation experiments between two populations of Chinook salmon to detail the genetic architecture and plasticity of offspring survival and growth. (uwindsor.ca)
  • Translocations between populations revealed that offspring survival and growth varied between environments, the degree of which differed among families. (uwindsor.ca)
  • Although the practice of releasing fish into the wild is common in the management and conservation of fish populations, the success of release programmes and the potential harmful genetic and ecological effects that may follow are rarely considered. (diva-portal.org)
  • In evolution, the most important role of such chromosomal rearrangements may be to accelerate the divergence of a population into new species by making populations less likely to interbreed, thereby preserving genetic differences between these populations. (wikipedia.org)
  • Additionally, they are used as potential biomarkers to screen for certain genetic syndromes present in human populations. (wikipedia.org)
  • leukemia
  • In search of new recurrent balanced translocations, we reviewed the Cancer and Leukemia Group B (CALGB) cytogenetics database containing pretreatment and relapse karyotypes of 4,701 adults with AML and 565 with MDS who were treated on CALGB trials. (biomedsearch.com)
  • maternal
  • In one population, we found that additive genetic, nonadditive genetic and maternal effects explained 25%, 34% and 55% of the variance in larvae survival, respectively. (uwindsor.ca)
  • In contrast, fry survival was regulated primarily by additive genetic effects, which indicates a shift from maternal to genetic effects as development proceeds. (uwindsor.ca)
  • Drosophila
  • One study on genetic variations between different species of Drosophila suggests that, if a mutation changes a protein produced by a gene, the result is likely to be harmful, with an estimated 70 percent of amino acid polymorphisms that have damaging effects, and the remainder being either neutral or marginally beneficial. (wikipedia.org)
  • Abstract
  • ENGLISH ABSTRACT: The five leading abalone producers in South Africa have initiated a genetic enhancement program for Haliotis midae in a collaborative effort to improve economically valuable traits. (sun.ac.za)
  • ENGLISH ABSTRACT: To manipulate recombinant microorganisms for industrial processes, controllable genetic systems are needed that can coordinate expression of recombinant metabolic pathways. (sun.ac.za)
  • carriers
  • Most balanced translocation carriers are healthy and do not have any symptoms, but about 6% of them have a range of symptoms that may include autism, intellectual disability, or congenital anomalies. (wikipedia.org)
  • outcome
  • Human genetic variation is an important determinant of the outcome of infection with Mycobacterium tuberculosis. (sun.ac.za)
  • considerations
  • Further, the lack of a detectable spatial genetic structure in the European eel suggests that the management strategy of translocating juvenile eels from locations were they are overabundant to other suitable freshwater habitats does not necessarily have to include genetic considerations with respect to the geographical origin of the translocated eels. (diva-portal.org)
  • variation
  • What is the variation in reproductive success in the wild, and how does it affect the genetic consequences of a supportive breeding programme? (diva-portal.org)