BIOA01H3 Lecture Notes - Lecture 1: Environmental Factor, Macroevolution, Natural Selection

• School: UTSC
• Department: Biological Sciences
• Course: BIOA01H3
• Professor: Mark Fitzpatrick

Document Summary

There are two categories of evolution: microevolution. It is a change within species: a heritable variation in genetic of a population (e. g. antibiotic resistance, natural selection is one of an important factor for this evolution, macroevolution, a large-scale evolution. On of the important effect of evolution is a discovery of penicillin. Penicillin represent an evolver response of bacteria. One way to measure microevolution is to study phenotypic variations which is how the organism look, behave and measure. Phenotypic variation can be: quantitative, can be measured (e. g. height) Influenced by a gene: qualitative, distinct variant of characters (presence of spine, color, simply it is distinct visual feature. Another way to measure microevolution is to see a change in a mean of a population or a change in the shape of population curve. Phenotype are the outward expression of how organism behave, look and its shape. Phenotype variations are due to: genetics, environmental factor. Mutation plays a key role in variation.