Across
- 4. The process by which individuals that are better adapted to their environment are more likely to survive and reproduce (two words with - inbetween)
- 5. A trait or novel process that helps an organism survive and reproduce
- 6. A difference between individuals of the same species
- 7. ancestry The last shared common ancestor on the branching tree of evolution
- 10. The theory that evolution occurs slowly but steadily
- 11. How well an organism can survive and reproduce in its environment
- 14. The gradual change in species over time
- 15. The last shared common ancestor (two words with - inbetween)
Down
- 1. The set of information that controls a trait
- 2. A technique used to determine which of two fossils is older based on the layer of rock in which it was found (two words in one word with uppercases at start of word)
- 3. Body parts that are structurally similar in related species and that provide evidence for a common ancestor (two words with - inbetween)
- 8. Change in the genetic material of a cell
- 9. The person who made the theory that explains how modern organisms evolved over millions of years (last name)
- 12. A group of similar organisms that can mate with each other and produce fertile offspring
- 13. Remains of an organism from the past