摘要 基因組 scale orthology assignments are usually based

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論文資訊

• 類型：已發表論文
• 日期：2020

摘要

基因組-scale orthology assignments are usually based on reciprocal best matches. In the absence of horizontal gene transfer (HGT), every pair of orthologs forms a reciprocal best match. Incorrect orthology assignments therefore are always false positives in the Reciprocal Best Match Graph. We consider duplication/loss scenarios and characterize unambiguous false-positive (u-fp) orthology assignments, that is, edges in the Best Match Graphs (BMGs) that cannot correspond to orthologs for any gene tree that explains the BMG. We characterize u-fp edges in terms of subgraphs of the BMG and show that, given a BMG, there is a unique “augmented tree” that explains the BMG and identifies all u-fp edges in terms of overlapping sets of 物種 in certain subtrees. The augmented tree can be constructed as a r

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