BIOL 226 Lecture Notes - Lecture 3: Monophyly, Anisogamy, Killer Whale
Document Summary
Darwin"s orchid: the orchid co-evolved with a moth because of the long of the moth and the long nectar tube of the orchid. Lions: the males kill the offspring because they want to pass on their own genes instead of the other"s genes. Fish & orca: one"s a fish one"s a mammalian, the orientation of their tails is different (evolution has been acting here in a random way) * birds and bats inherited their forelimbs from fish. *the correct tree: c (because birds and crocodiles are dinosaurs) To birds because of the way we read the tree: we look for the branch point, not how close the names are. Evolution: descent with modification, change in the genetic composition of a population over time. Because he regrouped the evidence he found under the term of natural selection (the differential reproductive success of individuals within a population based on how well those individuals are adapted to their environment.
