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Free keywords:
Molecular population-genetics; dna-sequence evolution; natural-
selection; codon usage; evolving genes; silent sites;
melanogaster; polymorphism; recombination; substitution
Abstract:
In genome projects of eukaryotic model organisms, a large number of novel genes of unknown function and evolutionary history ("orphans") are being identified. Since many orphans have no known homologs in distant species, it is unclear whether they are r
