Question

thylacosmilus is a marsupial, and smilodon is a mammal. thylacosmilus and smilodon both have saber teeth, but they do not share an ancestor that had saber teeth. what are saber teeth for these organisms?
○ analogous structures
○ homologous structures
○ vestigial structures
○ mutated structures

Explanation:

Analogous structures are traits that are similar in function and appearance in different organisms, but they evolved independently (not inherited from a common ancestor with that trait). Homologous structures come from a shared ancestor, vestigial structures are leftover non-functional traits from ancestors, and mutated structures refer to random genetic changes, which does not describe this evolutionary trait similarity. Since Thylacosmilus and Smilodon have saber teeth but no shared ancestor with this trait, the teeth are analogous.

Answer:

analogous structures