Khan Academy Static

A family tree can tell you how you are related to your close relatives...but an evolutionary tree can tell us how all living things on Earth are related! Learn about what makes something a species, where new species come from, and how living organisms can be classified into groups (on the basis of either evolutionary relatedness or other features).

9738_2015_AP_Biology_free_response_3_phylogenetic_trees.html

9731_Bozeman_science_mechanisms_that_increase_genetic_variation.html

9727_Species.html

9730_Genetic_variation_gene_flow_and_new_species.html

9736_Bozeman_science_Speciation.html

9735_Bozeman_science_Phylogenetics.html

9733_Understanding_and_building_phylogenetic_trees.html

9729_Biodiversity_and_natural_selection.html

9737_Bozeman_science_Speciation_and_extinction.html

9734_Bozeman_Science_Cladograms.html

9728_Speciation.html

9732_Discovering_the_tree_of_life.html

9726_Taxonomy_and_the_tree_of_life.html