Across
- 6. The different parts of an organism's body, like its organs, bones, and tissues
- 9. The gradual change in a species over time.
- 10. The physical arrangement of parts within a living thing, from the tiniest cell to a whole organism
Down
- 1. Body parts that are structurally similar in related species; these provide evidence that the structures were inherited from a common ancestor
- 2. A branching diagram that looks like a tree and shows how different living things are related
- 3. The job or role of a body part, like how the heart pumps blood or lungs help you breathe
- 4. Differences in the genetic code (DNA) within a species that lead to unique features in each individual (like hair color or eye color)
- 5. A specific characteristic of an individual that can be determined by genes, environmental factors or by a combination of both. These can be qualitative (such as eye color) or quantitative (such as height)
- 7. Ancestor: An ancient living thing that two or more different species came from
- 8. A body part or organ that an organism inherited from an ancestor but no longer has a significant or clear function in the modern species