Evolution and repetition

A brief introduction to this album.

Transcript -- A brief introduction to this album.

Does the modern science of genetics confirm or contradict Darwin's approach to evolution? Sean Carroll reveals how the structure of DNA gives today's scientists new insights into species development.

Transcript -- Does the modern science of genetics confirm or contradict Darwin's approach to evolution? Sean Carroll reveals how the structure of DNA gives today's scientists new insights into species development.

Certain genes are found in DNA sequences which are no longer in use. These are an important tool to help us understand the evolution of particular organisms.

Transcript -- Certain genes are found in DNA sequences which are no longer in use. These are an important tool to help us understand the evolution of particular organisms.

Studying the DNA record reveals how certain adaptations are repeated in different species that find themselves facing similar challenges.

Transcript -- Studying the DNA record reveals how certain adaptations are repeated in different species that find themselves facing similar challenges.

Certain genes that play a crucial role in the evolution of complex structures, such as the eye, turn out to be common to many different species.

Transcript -- Certain genes that play a crucial role in the evolution of complex structures, such as the eye, turn out to be common to many different species.