Across
- 1. the degree in which an organisms can reproduce successful in its environment
- 4. ______ Selection a human controlled process of passing on traits
- 6. a change in the DNA
- 7. a sequence of DNA
- 9. disappearance of a species
Down
- 2. change over time
- 3. heritable trait that increases the likely hood of survival and reproduction
- 5. _____ Drift evolution that occurs by chance
- 8. _____Selection traits that improve an organisms chance for survival are passed on from one generation to the next