A classic example of natural selection at work is the origin of giraffes’ long necks. The ancestors of modern giraffes were animals similar to deer or antelope, with necks of ordinary length.

Description: The tallest land mammal, with a neck as long as 6 feet, the giraffe is also well known for the unique brown and white pattern on its coat (“pelage”) and its lengthy eyelashes and legs.

Animation describing the evolution of the giraffe. Sam, a young tortoise, wishes he had a longer neck to reach the nicest leaves. Grandad Charlie tells Sam a story about giraffes. Long ago ...

With poaching all but quashed by the government and without any natural predators ... have suggested that the giraffe’s long neck is actually a function of sexual selection.

A giraffe's neck is extraordinary long, making up a large part of its height. This allows the animal to reach the leaves of tall trees. But an elongated neck is also integral to the courtship ...

Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes ...

Animation describing the evolution of the giraffe. Sam, a young tortoise, wishes he had a longer neck to reach the nicest leaves. Grandad Charlie tells Sam a story about giraffes. Long ago ...