本頁只刊出中文翻譯與中文說明；英文原文請見下方原文連結。
原文連結
論文資訊
- 類型：已發表論文
- 日期：2015-12-09
摘要
Rates of phenotypic 演化 vary widely in nature and these rates may often reflect the intensity of 自然選擇. Here we outline an approach for detecting exceptional shifts in the rate of phenotypic 演化 across phylogenies. We introduce a simple new branch-specific metric (V)/(B) that divides observed phenotypic change along a branch into two components: (1) that attributable to the background rate ((B)), and (2) that attributable to departures from the background rate ((V)). Where the amount of expected change derived from variation in the rate of morphological 演化 doubles that explained by to the background rate ((V)/(B)>2), we identify this as positive phenotypic selection. We apply our approach to six datasets, finding multiple instances of positive selection in each. Our results support the growin
※ 此為已發表論文，全文需透過期刊付費取得