Tracing the Evolution of Avian Wing Digits
文献类型：期刊论文
| 作者 | Xu, Xing1; Mackem, Susan2; xu.xing@ivpp.ac.cn |
| 刊名 | CURRENT BIOLOGY
 |
| 出版日期 | 2013-06-17 |
| 卷号 | 23期号:12页码:R538-R544 |
| 关键词 | Hox Genes Sonic Hedgehog Frame-shift Limb Bud Birds Origin Homology Identity Expression Dinosaurs |
| ISSN号 | 0960-9822 |
| 文献子类 | Review |
| 英文摘要 | It is widely accepted that birds are a subgroup of dinosaurs, but there is an apparent conflict: modern birds have been thought to possess only the middle three fingers (digits II-III-IV) of an idealized five-digit tetrapod hand based on embryological data, but their Mesozoic tetanuran dinosaur ancestors are considered to have the first three digits (I-II-III) based on fossil evidence. How could such an evolutionary quirk arise? Various hypotheses have been proposed to resolve this paradox. Adding to the confusion, some recent developmental studies support a designation for avian wing digits whereas some recent paleontological data are consistent with a identification of the Mesozoic tetanuran digits. A comprehensive analysis of both paleontological and developmental data suggests that the evolution of the avian wing digits may have been driven by homeotic transformations of digit identity, which are more likely to have occurred in a partial and piecemeal manner. Additionally, recent genetic studies in mouse models showing plausible mechanisms for central digit loss invite consideration of new alternative possibilities (I-II-IV or I-III-IV) for the homologies of avian wing digits. While much progress has been made, some advances point to the complexity of the problem and a final resolution to this ongoing debate demands additional work from both paleontological and developmental perspectives, which will surely yield new insights on mechanisms of evolutionary adaptation. |
| URL标识 | 查看原文 |
| WOS关键词 | HOX GENES ; SONIC HEDGEHOG ; FRAME-SHIFT ; LIMB BUD ; BIRDS ; ORIGIN ; HOMOLOGY ; IDENTITY ; EXPRESSION ; DINOSAURS |
| WOS研究方向 | Biochemistry & Molecular Biology ; Cell Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000320682800015 |
| 公开日期 | 2013-11-27 |
| 源URL | [http://119.78.100.205/handle/311034/4142]  |
| 专题 | 古脊椎动物与古人类研究所_古低等脊椎动物研究室 |
| 通讯作者 | xu.xing@ivpp.ac.cn |
| 作者单位 | 1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origin, Beijing 100044, Peoples R China 2.NCI, Canc & Dev Biol Lab, Ctr Canc Res, NIH, Frederick, MD 21702 USA |
| 推荐引用方式 GB/T 7714 | Xu, Xing,Mackem, Susan,xu.xing@ivpp.ac.cn. Tracing the Evolution of Avian Wing Digits[J]. CURRENT BIOLOGY,2013,23(12):R538-R544. |
| APA | Xu, Xing,Mackem, Susan,&xu.xing@ivpp.ac.cn.(2013).Tracing the Evolution of Avian Wing Digits.CURRENT BIOLOGY,23(12),R538-R544. |
| MLA | Xu, Xing,et al."Tracing the Evolution of Avian Wing Digits".CURRENT BIOLOGY 23.12(2013):R538-R544. |
入库方式： OAI收割
来源：古脊椎动物与古人类研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。