BIOLOGY 207 Lecture Notes - Lecture 7: Proteobacteria, Transitional Fossil, Motility
Document Summary
A result of horizontal gene transfer (hgt): (54: auxiliary gene trees will vary, metabolic diversity and other bits of foreign genomic sequences are passed around. Core gene trees, aka trees of genes involved in things like rdna usually do not vary: this model, however, has been challenged. Slide 55 chimeric hypothesis for eukaryotic origin: hypothesis of a fusion event of archae and proteobacteria to form eukaryotes, the archaean cell becomes the host cell, and the proteobacteria becomes the mitochondria. Eukaryotic diversity is mainly present in plants, animals and fungi the rest are in the. Nucleus development: zero evidence of any kind of transitional form; only see prokaryotic form and then the completely compartmentalized nucleus: developed perhaps to compartmentalize transcription and translation. Protistian scientists sort by mode of nutrition, phenotype, and locomotion. No clear knowledge about how the protist supergroups fit together just know it is like a.
