Across
- 3. form of natural selection that individuals at one end of a distribution curve have a higher end of fitness that the others
- 4. structure thats inherited from ancestors but has lost most or al of its original function
- 8. how well a organism can survive and reproduce
- 9. change over time
- 10. for of natural selection that individuals near the middle of a distribution
- 12. natural selection in which the individuals at the lower and upper ends of the curves have higher fitness levels
- 16. preserved remains or traces of organisms
- 18. number of ties a allele occurs in a gene pool
- 20. body parts that share functions
Down
- 1. increases an organisms ability to survive
- 2. survival of the fittest
- 5. trait controlled by the gene that has 2+ alleles
- 6. structures that are similar in different species
- 7. trait controlled by 2+ genes
- 11. study of distribution of organisms
- 13. a group of similar organisms that can reproduce fertile offspring
- 14. formation of a new species
- 15. sum total of all of the different forms of genetic information
- 17. change in allele frequencies
- 19. all the genes that are in a present population