EECS 1520 Lecture Notes - Lecture 5: Ernst Mayer, Population Genetics, Melanism

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: york university

Document Summary

Biol lecture 3; natural selection; evidence for evolution; population genetics i. Arti cial selection: humans selects breakable plant or animal with exceptional qualities to create new breeds. The best adapted species survive and reproduce while the others don"t. Species changed over many generations ( evolution) becoming better and more adapted. Published theory of natural selection as a short academic paper intended only for scienti c audience. Darwin publishes on the origin of species in 1859 opened to the general public, contained extensive anecdotal evidence accumulated over decades. Ernst mayer summarized darwin"s theory as 3 inferences based on 5 observation. Observation 1: species are able to increase in number geographically if their o spring survive and reproduce. Observation 2: population tends to remain stable in size. Observation 4: no two individuals in a population are exactly alike. Observation 5: some of this variation is heritable. Evolution, a change in a genetic makeup of a population (individuals can"t change their genetic makeup)