Periodic Table
Across
- 2. a testable explanation
- 4. a length of DNA containing many genes
- 7. differences in the features of a species
- 9. passing on genetic information
- 11. change within a kind
- 13. a gene controlled feature that shows up when a dominant gene is absent
- 15. controls a feature of an organism
- 16. features that change gradually over a range of values
- 19. repeatedly choosing individuals to breed to produce offspring with certain features
- 20. passing on genetic information
- 21. repeatable measurable observation
- 23. the greater chance of passing on genes by the best adapted organisms
Down
- 1. change from one kind into a different kind
- 3. investigations that are not fully repeatable or testable
- 5. random change in the DNA
- 6. an idea that may or may not be true
- 8. features with distinct forms
- 10. investigations that are repeatable and testable
- 12. a group of organisms that normally interbreed to produce fertile offspring
- 14. a gene controlled feature that always shows up if passed on
- 17. well tested explanation that includes facts, laws and hypotheses
- 18. a group of organisms that have a common ancestor
- 22. a pattern found in the natural world under certain conditions