Patterns of genetic variation among various Beringian birds
Thesis (M.S.) University of Alaska Fairbanks, 2008 Every animal has two different sets of genes, the mitochondrial genome and the nuclear genome. They are inherited independently of each other and can have dissimilar evolutionary histories. For this thesis, I examined the correlation of the mitochon...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/76 2024-09-15T18:41:29+00:00 Patterns of genetic variation among various Beringian birds Patterns of genetic diversity among various Beringian birds Humphries, Elizabeth Marella Winker, Kevin McCracken, Kevin Sikes, Derek Pruett, Christin L. 2008-12 http://hdl.handle.net/11122/76 unknown http://hdl.handle.net/11122/76 Department of Biology and Wildlife Beringian birds evolutionary histories Thesis ms 2008 ftunivalaska 2024-08-12T03:04:02Z Thesis (M.S.) University of Alaska Fairbanks, 2008 Every animal has two different sets of genes, the mitochondrial genome and the nuclear genome. They are inherited independently of each other and can have dissimilar evolutionary histories. For this thesis, I examined the correlation of the mitochondrial (using direct sequencing of mitochondrial DNA) and nuclear (using a fragment-based technique, AFLPs) evolutionary histories in Beringian birds. The first study looked at relationships among a within-Beringia radiation of birds, the Aethia auklets. I was able to infer a resolved phylogeny using mitochondrial DNA, but found a polytomy using nuclear DNA. The lack of correlation between the genomes is either the result of incomplete lineage sorting or reflects the fact that AFLPs may not be an appropriate technique to survey nuclear diversity at this level of divergence. In the second study, I examined the correlation between taxonomic status, mitochondrial divergence, and nuclear divergence among nine lineages of trans-Beringian birds. I found no relationship between any of the three variables, suggesting that trans-Beringian birds have complex and discordant genetic and phenotypic histories. Thesis Alaska Beringia University of Alaska: ScholarWorks@UA |
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Open Polar |
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University of Alaska: ScholarWorks@UA |
op_collection_id |
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unknown |
topic |
Beringian birds evolutionary histories |
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Beringian birds evolutionary histories Humphries, Elizabeth Marella Patterns of genetic variation among various Beringian birds |
topic_facet |
Beringian birds evolutionary histories |
description |
Thesis (M.S.) University of Alaska Fairbanks, 2008 Every animal has two different sets of genes, the mitochondrial genome and the nuclear genome. They are inherited independently of each other and can have dissimilar evolutionary histories. For this thesis, I examined the correlation of the mitochondrial (using direct sequencing of mitochondrial DNA) and nuclear (using a fragment-based technique, AFLPs) evolutionary histories in Beringian birds. The first study looked at relationships among a within-Beringia radiation of birds, the Aethia auklets. I was able to infer a resolved phylogeny using mitochondrial DNA, but found a polytomy using nuclear DNA. The lack of correlation between the genomes is either the result of incomplete lineage sorting or reflects the fact that AFLPs may not be an appropriate technique to survey nuclear diversity at this level of divergence. In the second study, I examined the correlation between taxonomic status, mitochondrial divergence, and nuclear divergence among nine lineages of trans-Beringian birds. I found no relationship between any of the three variables, suggesting that trans-Beringian birds have complex and discordant genetic and phenotypic histories. |
author2 |
Winker, Kevin McCracken, Kevin Sikes, Derek Pruett, Christin L. |
format |
Thesis |
author |
Humphries, Elizabeth Marella |
author_facet |
Humphries, Elizabeth Marella |
author_sort |
Humphries, Elizabeth Marella |
title |
Patterns of genetic variation among various Beringian birds |
title_short |
Patterns of genetic variation among various Beringian birds |
title_full |
Patterns of genetic variation among various Beringian birds |
title_fullStr |
Patterns of genetic variation among various Beringian birds |
title_full_unstemmed |
Patterns of genetic variation among various Beringian birds |
title_sort |
patterns of genetic variation among various beringian birds |
publishDate |
2008 |
url |
http://hdl.handle.net/11122/76 |
genre |
Alaska Beringia |
genre_facet |
Alaska Beringia |
op_relation |
http://hdl.handle.net/11122/76 Department of Biology and Wildlife |
_version_ |
1810485888472317952 |