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Tajima's D is a population genetic test statistic created by and named after the Japanese researcher Fumio Tajima. [1] Tajima's D is computed as the difference between two measures of genetic diversity: the mean number of pairwise differences and the number of segregating sites, each scaled so that they are expected to be the same in a neutrally evolving population of constant size.
Fumio Tajima was born in Ōkawa, in Japan's Fukuoka prefecture, in 1951. [1] [2] He graduated from high school in 1970, completed his undergraduate degree at Kyushu University in 1976, and received a Master's degree from the same institution in 1978. [3]
The four gamete rule can be applied to the data to ensure that they do not violate the model assumption of no recombination. [ 4 ] The mutation rate ( θ {\displaystyle \theta } ) can be estimated as follows, where μ ∗ {\displaystyle \mu ^{*}} is the number of mutations found within a randomly selected DNA sequence (per generation), N e ...
The allele frequency spectrum can be written as the vector = (,,,,), where is the number of observed sites with derived allele frequency .In this example, the observed allele frequency spectrum is (,,,,), due to four instances of a single observed derived allele at a particular SNP loci, two instances of two derived alleles, and so on.
Population genomics is the large-scale comparison of DNA sequences of populations. Population genomics is a neologism that is associated with population genetics.Population genomics studies genome-wide effects to improve our understanding of microevolution so that we may learn the phylogenetic history and demography of a population.
Fay and Wu's H is a statistical test created by and named after two researchers Justin Fay and Chung-I Wu. [1] The purpose of the test is to distinguish between a DNA sequence evolving randomly ("neutrally") and one evolving under positive selection.
Fumio Tajima (田嶋 文生, born 1951), Japanese population geneticist; Gochin no Tajima (五智院 但馬), Japanese warrior monk; Daiki Tajima (田嶋 大樹, born 1996), Japanese baseball player; Hiroyuki Tajima (田嶋 宏行, 1911–1984), Japanese print maker of the Sosaku Hanga School; Honami Tajima (田島 穂奈美, born 1988 ...
Tajima's D; Taleb distribution; Tampering (quality control) Taylor expansions for the moments of functions of random variables; Taylor's law – empirical variance-mean relations; Telegraph process; Test for structural change; Test–retest reliability; Test score; Test set; Test statistic; Testimator; Testing hypotheses suggested by the data ...