PNB 2XC3 Chapter 2: Chapter 2- The evolution of Behaviour

• School: McMaster University
• Department: Psychology, Neuroscience & Behaviour
• Course: PNB 2XC3
• Professor: Paul Faure

Document Summary

Artificial selection: process of humans deliberately choosing certain varieties of an organism over others by implementing breeding programs that favour one variety over another. When nature is the selective agent, traits, including behavioural traits, increase or decrease in frequency as a function of how well they suit organisms to their environment. One hunted in packs; natural selection selected for hunting. one hunted in alone in packs due to higher foraging success. Variation in the traits- different varieties of the trait. Fitness consequences of the trait- different varieties of the trait must affect reproductive success differently. A mode of inheritance- a means by which the trait is passed on to the next generation. Approach score: the time from when the object is first spotted to the time the animal interacts with this object. Variation: for natural selection to act, individuals in our population must differ from one another with respect to their approach score. caused by environmental or genetic factors.