BI110 Lecture Notes - Lecture 2: Oenology
Document Summary
Systematics: also involves the taxonomy, homology, enology- Descent, with modification- slide 1 they roughly have the same bones present in their wings: we can see how modifications of the basic structure has led to different phenotypes. Homology of structures have different function but have the same developmental structures has been selection on them that has modified there structure. Why do analogous structures evolve: very similar structures. If we look at a bilogony we see that there is no recent ancestor: suggesting that it has started independently, pitchers are an analogous trait. Similar niches, similar forms: we see marsupials that have the same niche, generated the same traits over time, see very similar fish living in the same environment conditions. Ancestral and derived structures: ancestral-the characteristics that organisms share because of their common ancestors, have to pick a species which share common ancestors that lack the same traits.
