BIOL 4120 Lecture Notes - Lecture 3: Natural Selection 2, Passerine, Dhow

• School: University of Guelph
• Department: Biology
• Course: BIOL 4120
• Professor: Beren Robinson

Document Summary

Latin root words (cid:494)ad(cid:495) (cid:523)towards, for(cid:524) + (cid:494)aptus(cid:495) (cid:523)a particular role(cid:524) (cid:494)adaptation" in biology confusion (=acclimation, plasticity) Adaptation: an outcome of the evolutionary process above the state of a: having a trait that is an adaptation for their particular local trait in a population that has evolved under selection environment. In order to ask if a trait is an adaptation (an outcome of an evolutionary process that is driven by the ecological process of natural selection) we must ask is it is/has evolved by natural selection. In the desserts of sw america and elsewhere, there are horned lizards. After which the bird lifts the prey and skewers its carcass in a sharp branch in its territory in order to hold it while they feed on it (is skewering prey on spikes and adaptation?) The difference in mean residual parietal horn length in the x-axis shows evidence of variation in horn length in the population.