PSY354H5 Lecture Notes - Lecture 2: Sexual Reproduction, Asexual Reproduction, Advantageous
Document Summary
Coined the term sexual selection to explain apparent anomalies: one individual selecting another for the process of reproduction. There are variations in traits within the population: for a trait to have natural selection, it not only has to vary within a population, it has to have heritable element within the trait. These variations are heritable: traits could be passed from one generation to the next. If these traits promote survival and they are passed onto offspring, the trait(s) will increase in frequency in a population. The goal for every individual: pass on your own genes: selfish gene: if natural selection is operating of traits, these traits are all derived from an individuals dna. Dna act in a way that ensures multiple copies are passed on to the next generations. Natural selection in actions: an example from the galapagos. Home to the medium ground finch (geospiza fortis) Recorded each bird"s morphological characteristics (including body and bill size)
