BIOL 206 Study Guide - Midterm Guide: Vestigiality, Wedge Strategy, Parasitic Plant
Document Summary
Vestigial organs eg. fish evolves into a cave form but still has the bones needed to hold an eye. Parasitic plant get food from oak tree, therefore doesn"t need photosynthesis, but still has chloroplasts with genome. Or vestigialization of attractive traits in small flowering plants that self-fertilize. Exp: doubleday & crew hypothesized that the smaller plants above do not need to grow very tall, moths eat leaves so smaller plants do not give off aroma since they do not need moths to pollinate due to self-fertilization. These selfers only have only half the amount of chemicals produced. Production of these chemicals controlled by a few genes. Succession of living species with fossils in the same region related and distinct from other regions. Transitional forms in the fossil record, but not necessarily direct lines of descent. At the blue and red the species no longer recognizes the other as the same species.
