Finally, while we were able to identify significant expansions and contractions of gene families and speculate on how that may be significant given the species' environment, additional analyses are needed to link these expansions and contractions to functional changes between these species.
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Comparative Genomics of Transisthmian Damselfishes (Abudefduf saxatilis and A. troschelii).
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The sentences
Overall, the estimates showed a trend of larger population size of A. troschelii than A. saxatilis beginning at 100 KYA.