Question

For each of the following traits, identify whether you think the trait is an analogy or a homology, and why. A. Dolphins and sharks have fins. B. Horses and zebras have hooves. C. Turtles and snails have shells. D. Some snakes and spiders have venom. E. Crabs and lobsters have claws. Now, use material in your classroom, online, or in books to verify your answers about whether the traits are due to similar adaptations or common ancestry. Why is it important to distinguish between analogies and homologies when we classify organisms?

Answer 1

Traits such as fins in dolphins and sharks are analogous, whereas hooves in horses and zebras are homologous. Shells in turtles and snails are analogous, venom in some snakes and spiders is analogous, and claws in crabs and lobsters are homologous. Understanding these distinctions helps clarify evolutionary relationships.

Step-by-step explanation:

Identifying whether certain traits in organisms are analogous or homologous is crucial to understanding their evolutionary relationships.

It is important to distinguish between analogies and homologies when classifying organisms because it provides insight into the evolutionary history of the species. Homologous traits can indicate a close evolutionary relationship, while analogous traits may reflect similar environmental pressures leading to convergent evolution.