lineage 考研专八

8.a pedigreed animal of unmixed lineage; used especially of horses.

纯种血统动物；通特别指纯种马。

Cook seems to have been the first to coin the term \'speciation\' for the splitting of lineages or \'cladogenesis,\' as opposed to \'anagenesis\' or \'phyletic evolution\' occurring within lineages.

这一术语与发生在世“前进演化”或“种族进化”这些提法相抵触。

Take a lineage of microscopic marine animals known as bdelloid rotifers.Most rotifers reproduce sexually, but bdelloid rotifers abandoned sex about 100 million years ago.

就拿海洋中微小动物蛭形轮虫来说，大部份轮虫行有性生殖，但是蛭形轮虫已经把性丢开约一亿年了。

This duplication acceleration within the ancestral species is significant when compared to lineage-specific rate estimates even after accounting for copy-number polymorphism and homoplasy.

分析表明，在灵长类分支变成非洲大猩猩和人类过程中，这些复制数量开始增加，同时，越来越多传统基因变异开始缓慢减少。