RT Journal Article
SR Electronic
T1 Quantifying the effects of anagenetic and cladogenetic evolution
JF bioRxiv
FD Cold Spring Harbor Laboratory Press
SP 005561
DO 10.1101/005561
A1 Krzysztof Bartoszek
YR 2014
UL http://biorxiv.org/content/early/2014/11/10/005561.abstract
AB An ongoing debate in evolutionary biology is whether phenotypic change occurs predominantly around the time of speciation or whether it instead accumulates gradually over time. In this work I propose a general framework incorporating both types of change, quantify the effects of speciational change via the correlation between species and attribute the proportion of change to each type. I discuss results of parameter estimation of Hominoid body size in this light. I derive mathematical formulae related to this problem, the probability generating functions of the number of speciation events along a randomly drawn lineage and from the most recent common ancestor of two randomly chosen tip species for a conditioned Yule tree. Additionally I obtain in closed form the variance of the distance from the root to the most recent common ancestor of two randomly chosen tip species.