进化基因组学：从恐龙视角看基因组大小的进化

Evolutionary genomics: a dinosaur's view of genome-size evolution.

作者信息

Ellegren Hans

机构信息

Department of Evolutionary Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden.

出版信息

Curr Biol. 2007 Jun 19;17(12):R470-2. doi: 10.1016/j.cub.2007.04.023.

DOI:10.1016/j.cub.2007.04.023

PMID:17580079

Abstract

Estimates of cell volume in fossilized bones of extinct dinosaurs indicate that genome size underwent a significant reduction in the early theropods, from which birds later evolved. This suggests that birds' small genomes are not an adaptation to metabolic demands associated with flight.

摘要

对已灭绝恐龙化石骨骼中细胞体积的估计表明，基因组大小在早期兽脚亚目恐龙中经历了显著减少，鸟类后来从这些恐龙进化而来。这表明鸟类的小基因组并非是对与飞行相关的代谢需求的适应。