2018 Research in the Capitol
Presentation Type
Open Access Poster Presentation
Keywords
Catostomidae--Genetics; Genomes;
Abstract
Whole genome duplication (WGD) is a process in which the entire genome of an organism is duplicated, making redundant genes which are subject to unique evolutionary forces. Various modes of selection create different genetic fates such as retention of ancestral function, development of new function, or loss of function. Because of these differing fates, WGD is hypothesized to be a major driving force behind diversification. In this project, DNA sequences from fish species in the family Catostomidae were examined to observe patterns of evolution following a known WGD. Gene trees were generated for 179 loci to determine the amount of divergence among duplicates, revealing divergence to be more common than conservation. Time calibrated phylogenies were generated revealing the date of initial duplicate divergence within the subfamily Ictiobinae to be approximately 63 MYA. Further analysis could reveal the evolutionary fate of each loci, providing insight into the ways WGD affects diversification.
Start Date
3-4-2018 11:30 AM
End Date
3-4-2018 1:30 PM
Event Host
University Honors Programs, Iowa Regent Universities
Faculty Advisor
Pete Berendzen
Department
Department of Biology
Copyright
©2018 Megann Schmidt
File Format
application/pdf
Recommended Citation
Schmidt, Megann Michelle; Sperstad, Zachary; and Berendzen, Peter, "Rates and Patterns of Evolution in a Duplicated Genome in the Family Catostomidae [Poster]" (2018). Research in the Capitol. 16.
https://scholarworks.uni.edu/rcapitol/2018/all/16
Rates and Patterns of Evolution in a Duplicated Genome in the Family Catostomidae [Poster]
Whole genome duplication (WGD) is a process in which the entire genome of an organism is duplicated, making redundant genes which are subject to unique evolutionary forces. Various modes of selection create different genetic fates such as retention of ancestral function, development of new function, or loss of function. Because of these differing fates, WGD is hypothesized to be a major driving force behind diversification. In this project, DNA sequences from fish species in the family Catostomidae were examined to observe patterns of evolution following a known WGD. Gene trees were generated for 179 loci to determine the amount of divergence among duplicates, revealing divergence to be more common than conservation. Time calibrated phylogenies were generated revealing the date of initial duplicate divergence within the subfamily Ictiobinae to be approximately 63 MYA. Further analysis could reveal the evolutionary fate of each loci, providing insight into the ways WGD affects diversification.