Across
- 5. a measure of the relative contribution, an individual trait to the next generation
- 6. structures Are structures that are reduced forms of functional structures in other organisms.
- 8. structures Anatomically similar structures inherited from a common ancestor are called homologous structure.
- 10. some species have evolved morphological adaptations that allows them to blend in with their environments
- 11. an early pre-birth stage of an organism's development
Down
- 1. remains of an organism or its activities
- 2. traits More early features including teeth and tails that do not appear in ancestral forms.
- 3. trait Newly evolved features like feathers that do not appear in the fossils of common ancestors.
- 4. structures Can be used for the same purpose and can be superficially similar in construction, but are not inherited from a common ancestor.
- 7. scientists have confirmed and expanded Darwin's study of distribution of plants and animals around the world in a field of study now
- 9. one species evolves to resemble another species