BIO 1130 Lecture Notes - Physicalism, Divergent Evolution, Binomial Nomenclature

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Certain animals adapt into certain environments: he proposed five theories: 1. Evolution: no constancy of species- can be observed through variation in the offspring. Different sized beaks in finches display variation in the species and therefore, non constancy. This can cause change in the gene pool of a species over time: common ancestry- can be seen in the anatomy of different species like homologies and vestigial structures. Hip bones in whale are similar to humans which indicate the common ancestry between the two species: gradual change- displayed by the fossil records of many species. Older fossil records have some small differences from the newer fossil records which can be used to prove gradual change in species over time. These changes occur due to mutation and are picked out by the natural selection. Natural selection occurs every time a predator feeds on the weakest, slowest, worst camouflaged, most vulnerable prey.