Evolution Crossword

2. a similarity or resemblance to another species or object that helps protect one or both species
4. a theory about the rate of evolution
8. beneficial variations that improve an organisms ability to function and reproduce in its own particular environment
9. combined genetic info of all the members of a particular population
11. the death of a species due to not having the variations necessary to adapt to changing environment
12. the evolution of a single species into 2 or more species
13. when isolated populations of a species evolve independently

1. when alleles come together
3. differences between individual members of a population
4. random change in allele frequencies that occur in small populations
5. a sudden change in the environment results in need for an extreme variation or trait
6. process by which populations change over time in response to their environment
7. the sum total of the variety of organisms in the biosphere
10. process by which individuals that are better suited to their environment survive and reproduce most successfully
14. individuals who immigrate into a population bring with them new genes which could genetically alter the population