BI110 Lecture Notes - Lecture 3: Archaea, Eukaryote, Mutation
Document Summary
Variation: genetic variation, differences in individual dna, leading to difference in that individual"s rna and proteins, causes differences in physical appearance, ultimate source is mutation, environmental variation, how the environment has affected an organism, for ex. Apples that are exposed to different environmental factors. Phylogenetic trees in primates: nodes indicate a common ancestor. Through time evolution is driving change and new species. Tree of life: both bacteria and archaea lack a nucleus and are therefore prokaryotes, eukaryotes have a nucleus, however in spite of similar cellular structure of the bacteria and the archaea, the eukarya and archaea are closely related. In a poor food source: hypothesized that if a mutation occurred to make the e coli eat the food, they could reproduce faster. Ecology: the study of how organisms interact with each other and with their environment, features such as anatomy, physiology and behaviour, these interactions play an important role in evolution.
