Which statement best explains the evolution of fins in both sharks and dolphins?
Group of answer choices

Fins evolved in sharks and dolphins because they developed adaptations for similar environments over time.

Fins evolved in sharks and dolphins because they share a recent common ancestor.

Fins evolved in sharks and dolphins because they are the same species.

Sharks and dolphins possess the same mutations in their genes.

Number and variety of living organisms includes genetic, species, and ecological types

Explain the significance of the increased cell specialization of the volvocine line

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time