| 项目编号: | 1501675
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| 项目名称: | DISSERTATION RESEARCH: Origins of Parthenogenesis in the Common Checkered Whiptail |
| 作者: | Matthew Fujita
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| 承担单位: | University of Texas at Arlington
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| 批准年: | 2014
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| 开始日期: | 2015-06-01
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| 结束日期: | 2017-05-31
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| 资助金额: | USD16993
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | project
; origin
; diversity
; mexican researcher
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| 英文摘要: | One of the primary advantages of sexual reproduction is its ability to generate and maintain biodiversity, yet some species reproduce clonally. This project will address the ability of clonal reproduction to generate genetic diversity in unisexual lizards, the only group of vertebrates capable of reproducing without any input from males. Understanding the evolutionary trajectories of unisexual populations will help identify why sex is the prevalent mode of reproduction for multicellular life. Results and discoveries from this project will connect with the broader community by: 1) promoting training and mentoring, 2) clarifying species level relationships in a taxonomically-challenged species complex, and 3) facilitating exchange of intellectual expertise via international collaborations with Mexican researchers. Using emerging genomic approaches, unique lizard models, and the talents of an international team of researchers, this project addresses a persistent evolutionary question about the evolution and maintenance of sexual reproduction.
The goals of this project are to identify the evolutionary processes that shape organismal diversity in a clonally-reproducing lizard. Most vertebrate species maintain genetic variation by reproducing sexually, but several all-female lizards reproduce without males by cloning themselves; mothers beget daughters whose genomes are all but identical. However, cloning is imperfect, as individuals may not produce genetically-identical clones due to mutation. To investigate what generates diversity (including phenotypic diversity) among clones this project uses DNA sequence from one parthenogenetic, all-female species and its related sexual species to determine if either multiple founding events or genetic mechanisms after inception best explain the diversity in phenotypes. Combining genome-wide genotyping with a novel approach to sequence entire mitochondrial genomes, these data should permit a clear picture into the origins of the parthenogenetic species and infer species level relationships among the sexual species. This research will investigate the tempo and mode of mutation processes generating diversity in a clonally-reproducing lizard, thus providing insight into the origins and evolution of unisexuality in vertebrates. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94509
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Matthew Fujita. DISSERTATION RESEARCH: Origins of Parthenogenesis in the Common Checkered Whiptail. 2014-01-01.
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