Repetitive DNA in genome organization of phyllostomoid bats: test of a molecular model for chromosomal evolution
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
My study involves pairwise comparisons of species representing various higher taxa. The main comparison will be between Rhinophylla pumilio that has undergone karyotypic megaevolution (Baker and Bickham 1980, Baker and Bickham 1984), and Rhinophylla fischerae with very little karyotypic change. To make the test more robust, there are certain criteria that should be met. First, the comparisons should be between taxa where all other proposed variables casually related to chromosomal evolution are equivalent. For example, the two taxa should have equivalent effective population size, breeding structure, generation time and life history characteristics. The second criterion is that the taxon being compared should share a recent common ancestor. Finally, and critical to the comparison, is an appropriate cladistic analysis that will document primitive versus derived karyotypes (Baker et al. 1987) as well as where chromosomal evolution has occurred within each lineage.