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| Rekonstrukcja Stanów Przodków× | Wybór (D Tajimy)× | |
|---|---|---|
| Dziedzina | Genetyka | Genetyka |
| Rodzina | Process / pipeline | Process / pipeline |
| Rok powstania≠ | 1991 | 1989 |
| Twórca≠ | Wayne Maddison | Fumio Tajima |
| Typ≠ | Inference method | Neutrality test |
| Źródło pierwotne≠ | Maddison, W. P. (1991). Squared-change parsimony reconstructions of ancestral states for continuous-valued characters on a phylogenetic tree. Systematic Zoology, 40(3), 308–314. DOI ↗ | Tajima, F. (1989). Statistical method for testing the neutral mutation hypothesis by DNA polymorphism. Genetics, 123(3), 585–595. DOI ↗ |
| Inne nazwy | ASR, Ancestral character reconstruction, Trait reconstruction | Tajima's D test, Selective sweep analysis, Neutrality test |
| Pokrewne≠ | 3 | 4 |
| Podsumowanie≠ | Ancestral state reconstruction (ASR) is a phylogenetic method that infers the character states (trait values or evolutionary features) of extinct ancestors by analyzing patterns of variation in extant (living) species. Developed by Wayne Maddison and colleagues in the 1990s, ASR uses the phylogenetic tree and observed trait variation in living species to estimate what ancestors possessed, enabling researchers to trace the evolutionary history of morphological, behavioral, ecological, and genomic traits. | Tajima's D is a statistical test designed to detect selective sweeps—recent, rapid fixation of advantageous mutations—from patterns of genetic variation in DNA sequences. Developed by Fumio Tajima in 1989, this test measures deviations from neutrality by comparing different measures of DNA sequence diversity. A significant Tajima's D value indicates departure from neutral evolution, suggesting positive selection, population structure, or demographic events. |
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