| 1. | Eyes of octopuses and mammals |
| 2. | Fore limbs of whales and bats |
| 3. | Wings of butterflies and birds |
| 4. | Flippers of penguins and dolphins |
Ernst Haeckel's embryological support for evolution was disapproved by:
| 1. | Alfred Wallace | 2. | Charles Darwin |
| 3. | Oparin | 4. | Karl Ernst von Baer |
Embryological support for evolution was proposed by:
| 1. | Ernst Heckel | 2. | Karl Ernst von Baer |
| 3. | Charles Darwin | 4. | Alfred Wallace |