We're jumping into some 'Puzzles, Predicaments, and Perplexities,' and a handbook for solo adventuring with this week's 5E ...

Losing Opens Up New Possibilities for Subsequent Gains Evolution is traditionally associated with increasing complexity and ...

Evolution is traditionally associated with increasing complexity and gaining new genes, but gene loss and simplification also ...

土拨鼠一般指旱獭，全球约15种，我国有4种，即灰、长尾、西伯利亚和喜马拉雅旱獭，分布于西北、东北及青藏高原的草原、高山草甸。网络视频里旱獭矮胖蠢萌，体长可达60厘米、体重超7公斤，靠厚毛皮与脂肪形似肉墩。分类学上，旱獭与敏捷的松鼠是近亲，同属松鼠科不 ...

These surviving subfamilies have doubled over the course of evolution to generate a total of ten genes in appendicularians”, explains Sánchez-Serna, first author of the paper. “In particular, ...