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Evolution and the tree of life

Learn
Introduction to evolution and natural selectionApe clarificationIntelligent design and evolutionEvolution clarificationNatural selection and the owl butterflyDarwin, evolution, & natural selectionVariation in a speciesEvidence for evolutionEvidence for evolution
Practice
Natural selection and DarwinGet 3 of 4 questions to level up!
Evidence for evolutionGet 3 of 4 questions to level up!
Learn
Allele frequencyHardy-Weinberg equationApplying the Hardy-Weinberg equationDiscussions of conditions for Hardy-WeinbergAllele frequency & the gene poolMechanisms of evolutionGenetic drift, bottleneck effect, and founder effectGenetic driftNatural selection in populations
Practice
Hardy-WeinbergGet 3 of 4 questions to level up!
Selection and genetic driftGet 3 of 4 questions to level up!
Learn
Taxonomy and the tree of lifeSpeciesSpeciationSpecies & speciationBiodiversity and natural selectionGenetic variation, gene flow, and new speciesDiscovering the tree of lifeUnderstanding and building phylogenetic treesPhylogenetic treesBuilding a phylogenetic tree

About this unit

Discover the diversity of life on Earth and the forces that shape it! In this section, you can learn about evolution, natural selection, and the tree of life, as well as basic population genetics. Special bonus: take a peek into the amazing worlds of bacteria and viruses.
Biology is brought to you with support from the
Amgen FoundationAmgen Foundation