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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.
Tajima's D is based on the expectation that S = theta * x where x is the sum of 1/i for i from 1 to N. Thus, we turn this into a method to estimate theta by noting that theta = E(S)/x. The current version suggests that S/x part is a "normalized" version of segregating sites, and this leads to a mistake in the calculation of D in the example.
Michael Kenneth Williams (November 22, 1966 – September 6, 2021) was an American actor. He rose to fame for his acclaimed portrayals of Omar Little on the HBO drama series The Wire (2002–2008) and Albert "Chalky" White on the HBO series Boardwalk Empire (2010–2014).
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]
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.
Michael Leonard Williams KSG (9 July 1935 – 11 January 2001) was a British actor who played both classical and comedy roles. He was best known for co-starring in the sitcom A Fine Romance with his wife Dame Judi Dench , and for voicing Dr. Watson in the long-running Sherlock Holmes adaptations for BBC Radio .
Freshman sensation Ryan Williams saved No. 4 Alabama from an epic collapse against No. 2 Georgia on Saturday night. Williams made an incredible 75-yard go-ahead TD catch with 2:18 to go to give ...
At the conclusion of 1992–93, Williams ranked fourth in the league in free-throw accuracy at 90.7 percent after making his final 84 attempts. In the process, he broke Calvin Murphy 's 1981 record of 78 successive free throws, continuing his streak into the following season ( 1993–94 ), making his first 13 attempts.