The similar fusiform body and fin shapes of sharks and dolphins, despite very different ancestries, illustrate
- A
Common descent producing homologous structures
- Bcheck_circle
Convergent evolution producing analogous structures
- C
Coevolution
- D
Vestigial structures
Explanation
Sharks (cartilaginous fish) and dolphins (mammals) faced similar selective pressures from aquatic life and independently evolved similar body shapes. The shared form is analogous, the result of convergence, not common ancestry.