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This animation shows how mutations in an ion channel protein lead to the genetic disease cystic fibrosis. The animation also discusses how research on this protein has been used to develop treatments for the disease.

This animation describes how skin color is generated by skin cells as protection against ultraviolet (UV) radiation.

This animation shows how a single species can give rise to many different species with distinct traits, using anole lizards as an example.

This film explores four decades of research on the evolution of Galápagos finches, which has illuminated how species form and diversify.

This film explores the adaptation of anole lizards (genus Anolis) to habitats common across the islands of the Caribbean. The anoles are excellent examples of adaptive radiation, convergent evolution, and speciation through reproductive isolation.

This film describes natural selection and adaptation in populations of rock pocket mice living in the American Southwest.

This animation shows how a mutation that allows adult humans to digest milk can be lost or spread under different circumstances.

This animation shows how HIV infects a cell and replicates itself using reverse transcriptase.

This video explores the evolution of a stickleback fish population over tens of thousands of years, based on fossil data.

This animation shows how quickly an advantageous mutation can spread through a mouse population over multiple generations.

This animation shows how the protein MECP2 helps switch off gene expression.

This animation shows how X chromosomes are randomly switched off in most female mammals.