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.

Namibia is a top safari destination partly due to its dramatic landscapes. With a new safari, travelers can explore three of ...

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.

but it takes a different approach to natural selection. Lamarckism proposes that animals acquire characteristics based on use or disuse during their lives, rather than through hard-coded genetic ...