Across
- 3. all genes and their alleles in the population
- 6. controlled by two or more traits
- 7. time it takes for half the radio active material to decay
- 8. had a theory of biogenesis
- 10. this is the original genetic coding system
- 12. middle of the curve has a higher fitness
- 13. something bad happens and only one trait gets to stay and get passed on
- 14. a trait controlled by only one gene
- 15. occurs during gamete production
Down
- 1. how many individuals of the same species that can be interbred
- 2. live in extreme conditions on earth
- 4. what gas did not appear on earth until 1.8 billion years ago?
- 5. one end has a higher fitness
- 9. formation of new species
- 11. both ends are better than the middle