Genetic drift or allelic drift is the change in the frequency of a gene variant (allele) in a population due to random sampling. The alleles in the offspring are a sample of those in the parents, and chance has a role in determining whether a given individual survives and reproduces. A population`s allele frequency is the fraction of the copies o....
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http://en.wikipedia.org/wiki/Genetic_drift
a change in the gene pool of a small population that takes place strictly by chance. Genetic drift can result in genetic traits being lost from a ... [7 related articles]
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http://www.britannica.com/eb/a-z/g/19
Random variations in gene frequencies resulting from gamete sampling, often more noticeable in small populations.
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http://www.cat-world.com.au/glossary
Random fluctuations (or 'walk') of gene frequencies from generation to generation that occur in small , isolated populations. Through genetic drift, genetic information controling certain features may be lost from a population because it is not transmitted to the offspring. In large populations any ...
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http://www.daviddarling.info/encyclopedia/G/genetic_drift.html
Random variation in gene frequency from one generation to another.
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http://www.encyclo.co.uk/local/20095
Random changes in the frequency of two or more alleles or genotypes within a population.
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http://www.encyclo.co.uk/local/20206
A cumulative process involving the chance loss of some genes and the disproportion ate replication of others over successive generations in a small population, so that the frequencies of genes in the population is altered. The process can lead to a population that differs genetically and in appearance from the original population.
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http://www.encyclo.co.uk/local/20945
<genetics> The random change of the occurance of a particular gene in a population, genetic drift is thought to be one cause of speciation when a group oforganisms is separated from its parent population. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
the change in allele frequency due to random variations in fecundity and mortality in a population (Ricklefs 1970:871).
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http://www.encyclo.co.uk/local/21070
The random fluctuation of allele frequencies in a population resulting from the sampling of gametes to produce a finite number of individuals in the next generation.
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http://www.encyclo.co.uk/local/21804
the change in allele frequency due to random variations in fecundity and mortality in a population (Ricklefs 1979:871).
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http://www.encyclo.co.uk/local/22030
the change in allele frequency due to random variations in fecundity and mortality in a population (Ricklefs 1979871).
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http://www.encyclo.co.uk/local/22216
Random change in allele frequency within a population. If the population is isolated and the process continues for long enough may lead to speciation.
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http://www.encyclo.co.uk/visitor-contributions.php
Changes in gene frequency in small populations due to random chance. Usually a loss of rare alleles.
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http://www.esf.edu/for/maynard/GENE_GLOSSERY.html
Changes in the frequencies of alleles in a population that occur by chance, rather than because of natural selection.
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http://www.fossilmall.com/Science/Glossary.htm
Type: Term Definitions: 1. a change in the frequencies of genetic traits or allele frequencies over generations.
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http://www.medilexicon.com/medicaldictionary.php?t=26666
Random changes in genetic diversity in a population over time, often leading to the loss of genetic diversity when populations are small.
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https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter
allele frequency changes in populations caused by random events rather than by natural selection, especially the effects of sampling error on the gene pool of small populations.
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https://forums.skadi.net/threads/11491-Biogeography-A-Glossary
Changes in allele frequencies that can be ascribed to random effects
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https://www.encyclo.co.uk/local/20125
Random changes in the frequency of alleles from generation to generation; especially in small populations, can lead to the elimination of a particular allele by chance alone.
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https://www.encyclo.co.uk/local/21571
Change in gene frequencies from generation to generation due to sampling errors that operate when an offspring generation is formed by random union of gametes in a finite population.
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https://www.encyclo.co.uk/local/22463
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