BIOL108 Study Guide - Final Guide: Common Descent, Synapomorphy, Monophyly

• School: University of Alberta
• Department: Biology (Biological Sciences)
• Course: BIOL108
• Professor: Lien Luong

Document Summary

Look the same and have the same evolutionary origin: analogous, appears the same but actually evolved independently, convergent evolution. Systematics: goal: organize species into groups with common ancestry that reflect ancestor- Descent with modification: descent = similarities due to common ancestry, modification = descendants accumulate differences, mutation, recombination, natural selection, different environments favor different traits, over time, descent with modification -> diversity. Individuals vary in their characteristics (phenotype) due to varied genetic makeup (genotype: 2. Resources are limited: populations produce more offspring than sustainable, 3. Fitness: some phenotypes with favorable traits will be better suited to survive and reproduce. Their genetic contribution to the next generation is greater therefore are said to have an increased fitness : 4. Evolution = changes in frequencies of alleles in a population (gene pool) between generations. Intermediate or common phenotypes favoured: mean of pop. Interbreeding results in genes being more similar between populations.