The Pentadactyl Limb: Evidence of Evolution and Adaptation

The video explains the pentadactyl limb, a limb with five digits found in all four-limbed vertebrates, indicating a common ancestor. It discusses how evolution has modified these limbs for different functions in various species, such as flying in bats, swimming in whales, digging in moles, and grasping in humans. The pentadactyl limb serves as evidence of evolution, showing gradual changes in limb characteristics to suit different uses.

What is a pentadactyl limb?

How do the structures of the pentadactyl limb differ among various species?

Can you give examples of how the pentadactyl limb is modified in different animals?

What evidence does the pentadactyl limb provide for evolution?

What does the similarity in the structure of the pentadactyl limb suggest about the species that possess it?