12 – Two Stories about Evolution

摘要: Publisher Summary This chapter is about two episodes in the history of life and human efforts to make sense out complex data. The first story origins Archaea their relationship Bacteria Eukarya. Eaborate hypothesis has been put forward, which proposes that Eukarya are extremely recent, extensively derived descendants Gram-positive bacteria should be called “neomura” for membrane structure. discussion presents this deserves serious evaluation criticism. It argues despite its appealing features, theory not as well supported by evidence. In second story, reviews Coelomata-Ecdysozoa standoff inconsistency between metazoan trees built on different sets molecular characters a real important phenomenon, but it cannot ruled favor Ecdysozoa with existing results genome-scale analysis examined chapter. also explains, using very recent data molting-related genes nematode, only diminutive proportion required molting synapomorphic insects worms.