BIO 1130 Lecture Notes - Lecture 8: Geologic Time Scale, Thrombosis, Medium Ground Finch

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Lecture 8: chapter 3, charles darwin and evolution continued. In lemarck"s said acquired traits can be passed down. Populations evolve over time: natural selection is measured at the population level, individuals are carriers of genetic materials; these genes do not alter or. Evolving: acquiring an adaptation of some sort. Selective pressures are different in different environments/times/locations results in different adaptations in species. Natural selection enables individuals that are better adapted to their environment to become more abundant than those who are not (differential reproductive success). Not a quest for perfection (evolution is not a directed process). It does not lead to the appearance of perfect traits. Artificial selection: is finalized (has clear objective, the goal, fixed well in advance, precedes the causes, the end result can be obtained in a few generations, ex; cabbage, brussel sprouts, kale, broccoli all come from wild mustard. Are nocturnal; rest on trees during day to coal and smoke pollution)