השוואת שיטות

	שחזור מצב קדמון	תאוריית הקואלסנציה
תחום	גנטיקה	גנטיקה
משפחה	Process / pipeline	Process / pipeline
שנת המקור	1991	1982
הוגה השיטה	Wayne Maddison	John Kingman
סוג	Inference method	Stochastic process model
מקור מכונן	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.	Kingman, J. F. C. (1982). The coalescent. Stochastic Processes and their Applications, 13(3), 235–248.
כינויים	ASR, Ancestral character reconstruction, Trait reconstruction	Kingman Coalescent, n-coalescent
קשורות	3	4
תקציר	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.	Coalescent theory is a probabilistic framework that traces the genealogical history of DNA sequences backward in time to their most recent common ancestor. Developed by John Kingman in 1982, this method forms the foundation of modern population genetics, enabling researchers to understand demographic events, estimate genetic parameters, and reconstruct evolutionary histories from modern genetic data.