genetic variability


Also found in: Dictionary, Thesaurus, Legal, Financial, Wikipedia.
Related to genetic variability: Genetic diversity, heritability

genetic variability

1. The range of minor alterations present in a genome, such as the number of diverse alleles of a specific gene that are found as a result of small mutations in the DNA of a species.
2. The expression of those diverse genes in living organisms and their impact on health or disease.
See also: variability

genetic variability

a range of phenotypes for a particular CHARACTER produced by alternative alleles of one or more genes, the range containing discrete groups (see QUALITATIVE INHERITANCE or a continuous spectrum of types (see POLYGENIC INHERITANCE). Genetic variability arises initially by MUTATION and is maintained by sexual reproduction involving CROSSING OVER in MEIOSIS. Such variation is the raw material for NATURAL SELECTION to act upon, ensuring that the best-adapted variants are most likely to reproduce.
References in periodicals archive ?
Demographic characterization and genetic variability of the Girgentana goat breed by the analysis of genealogical data.
Cultivated chickpea is characterized with limited genetic variability therefore, inter-specific crosses have been utilized for the construction of linkage maps (Simon and Muelbaur, 1997; Winter et al.
Genetic variability of soybean cultivars obtained through microsatellite markers in agarose gel.
Analysis of molecular variance (AMOVA) for genetic variability in Spodoptera frugiperda populations using 3 inter-simple sequence repeat (ISSR) molecular markers.
All genetic variability and genetic distance measures were calculated using the computer programs GENETIX 4.
Genetic variability and heritability of grain yield components and grain mineral concentration in India's pearl millet (Pennisetum blaucum (L.
As a precautionary measure, potential vole habitat and corridors for dispersal throughout the range should be identified and protected to prevent further fragmentation of the species and loss of genetic variability.
Summary: TEHRAN (FNA)- Genetic variability revealed in malaria genomes newly sequenced by two multi-national research teams points to new challenges in efforts to eradicate the parasite, but also offers a clearer and more detailed picture of its genetic composition, providing an initial roadmap in the development of pharmaceuticals and vaccines to combat malaria.
But slight genetic variability showed up among strains from Europe, with no variability in those from North America.
Washington, Oct 15 (ANI): By comparing the genomes of 29 different mammals, US scientists have discovered the vast majority of the so-called "dark matter" in the human genome that could explain genetic variability in cancer and other diseases.