Question

frogs and snakes share a common ancestor that lived in the distant past. based on this information, which of the following statements is most likely true? choose 1 answer: a frogs and snakes are not evolutionarily related because their common ancestor existed too far in the past. b frogs and snakes have shared dna sequences that they inherited from their common ancestor. c the common ancestor of frogs and snakes was a frog.

Explanation:

• Option A is incorrect because having a common ancestor means they are evolutionarily related, regardless of how far back the ancestor is.
• Option B is correct. Organisms that share a common ancestor inherit some of the same DNA sequences from that ancestor. So frogs and snakes, with a common ancestor, would have shared DNA sequences from it.
• Option C is incorrect. A common ancestor of frogs and snakes would be a species that is ancestral to both, not specifically a frog (as snakes and frogs diverged from this common ancestor, and the ancestor is not the same as a modern frog).

Answer:

B. Frogs and snakes have shared DNA sequences that they inherited from their common ancestor.