2nd International Triticeae Symposium
Richard R-C. Wang
The traditional application of genome analysis in phylogenetic inference is questionable. Hypotheses about phylogeny are based upon the analysis of homologous characters, existing as a consequence of common descent. The concept of homology in morphology and molecular biology is well-defined: To count as an homology any character must pass the similarity, congruence, and conjunction tests. In genome analysis homology is related to the behaviour of chromosomes during meiosis: homologous chromosomes pair, nonhomologous chromosomes do not. Thus, in genome analysis homology becomes a purely operational concept. How well does this operational concept work? And what are the relationships, if any, between this operational concept of homology and the homology concept of morphology and molecular biology?
Petersen, Gitte and Seberg, Ole, "Genomes, Chromosomes, and Genes and the Concept of Homology" (1994). Herbarium Publications. Paper 23.