Genetic viability is the ability of the genes present to allow a cell, organism or population to survive and reproduce.[1][2] The term is generally used to mean the chance or ability of a population to avoid the problems of inbreeding.[1] Less commonly genetic viability can also be used in respect to a single cell or on an individual level.[1]
Inbreeding depletes heterozygosity of the genome, meaning there is a greater chance of identical alleles at a locus.[1] When these alleles are non-beneficial, homozygosity could cause problems for genetic viability.[1] These problems could include effects on the individual fitness (higher mortality, slower growth, more frequent developmental defects, reduced mating ability, lower fecundity, greater susceptibility to disease, lowered ability to withstand stress, reduced intra- and inter-specific competitive ability) or effects on the entire population fitness (depressed population growth rate, reduced regrowth ability, reduced ability to adapt to environmental change).[3] See Inbreeding depression. When a population of plants or animals loses their genetic viability, their chance of going extinct increases.[4]
^ abcdeHartl DL (2020-06-25). A Primer of Population Genetics and Genomics (4th ed.). Oxford University Press. doi:10.1093/oso/9780198862291.001.0001. ISBN 978-0-19-886229-1.
^Luo L, Zhang YM, Xu S (March 2005). "A quantitative genetics model for viability selection". Heredity. 94 (3): 347–55. doi:10.1038/sj.hdy.6800615. PMID 15536483.
^Lacy RC (1997-05-21). "Importance of Genetic Variation to the Viability of Mammalian Populations". Journal of Mammalogy. 78 (2): 320–335. doi:10.2307/1382885. JSTOR 1382885.
^Robert A (September 2011). "Find the weakest link. A comparison between demographic, genetic and demo-genetic metapopulation extinction times". BMC Evolutionary Biology. 11 (1): 260. doi:10.1186/1471-2148-11-260. PMC 3185286. PMID 21929788.
Geneticviability is the ability of the genes present to allow a cell, organism or population to survive and reproduce. The term is generally used to...
Look up viable or viability in Wiktionary, the free dictionary. Viability or viable may refer to: Viability selection, the selection of individual organisms...
genetic drift. Genetic drift can cause alleles to disappear from a population, and this lowers genetic diversity. In small populations, low genetic diversity...
Zhang, Shanning; Hu, Jinchu; Bruford, Michael W.; Wei, Fuwen (2007). "GeneticViability and Population History of the Giant Panda, Putting an End to the 'Evolutionary...
ewes and about 50 kg (110 lb) for rams. Although there is considerable genetic variation in most of the northern European sheep breeds, Roslag sheep,...
mulberry (Morus rubra). There is now serious concern for the long-term geneticviability of the red mulberry because of extensive hybridization in some areas...
A population bottleneck or genetic bottleneck is a sharp reduction in the size of a population due to environmental events such as famines, earthquakes...
A genetic disorder is a health problem caused by one or more abnormalities in the genome. It can be caused by a mutation in a single gene (monogenic)...
respected and its essential processes shall not be impaired. The geneticviability on the earth shall not be compromised; the population levels of all...
Genetics is the study of genes, genetic variation, and heredity in organisms. It is an important branch in biology because heredity is vital to organisms'...
The genetic code is the set of rules used by living cells to translate information encoded within genetic material (DNA or RNA sequences of nucleotide...
Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology...
many as 500 language-based groups. They have a broadly shared, complex genetic history, but only in the last 200 years were they defined by others as...
growth and other measures of population viability. For example, a study by Manlik et al. (2016) forecast the viability of two bottlenose dolphin populations...
2019. Smith, Cameron M. (2013-12-13). "Smith, C.M., "Estimation of a geneticallyviable population for multigenerational interstellar voyaging: Review and...
A genetic screen or mutagenesis screen is an experimental technique used to identify and select individuals who possess a phenotype of interest in a mutagenized...
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population than if all viable males were considered. Furthermore, the successful males act as a genetic bottleneck, leading to more rapid genetic drift or inbreeding...
Genetic incompatibility describes the process by which mating yields offspring that are nonviable, prone to disease, or genetically defective in some...
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trees are harvested, leaving all others. This practice can reduce the geneticviability of the forest over time, resulting in poorer or less vigorous offspring...
genetic diversity within a single litter of cubs. Attempts to increase the viability of a species by increasing genetic diversity is called genetic rescue...
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cycle stage at which it acts. Some biologists recognise just two types: viability (or survival) selection, which acts to increase an organism's probability...
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Preimplantation genetic diagnosis (PGD or PIGD) is the genetic profiling of embryos prior to implantation (as a form of embryo profiling), and sometimes...
suffer varying degrees of genetic erosion. Many species benefit from a human-assisted breeding program to keep their population viable,[citation needed] thereby...
some types of parthenogenesis the offspring having all of the mother's genetic material are called full clones and those having only half are called half...
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