Homology vs Analogy
1. Homologous Traits a. Humans are bipedal mammals in the family Hominidae with origins in Africa about 250,000 years ago.. Giraffes have long necks, have distinct spotted markings and are the tallest mammals on Earth. b. Despite the size differences, both giraffes and humans have seven neck bones. Giraffes use their necks to reach for leaves in tall trees. Each neck bone is about 11 inches. Humans have a much smaller neck bones. Humans do not use their neck for neck battles like giraffes do. c. The common ancestor of these two species is a mammal from the dinosaur era. The skeleton of the prehistoric mammal was reconstructed and was discovered that it had 7 neck bones in its vertebrae. 2. Analogous Traits a. Ducks are birds who like and live in places like ponds, streams and rivers. They a...