Across
- 4. selection Type of natural selection where one extreme phenotype is favored
- 5. selection Type of natural selection where the average phenotype is favored and extremes are selected against
- 7. pool Collection of all the alleles present in a population
- 8. drift Random changes in allele frequencies caused by chance rather than fitness
- 10. flow Movement of genes or alleles between neighboring populations that makes them more alike
- 12. Any characteristic that increases the fitness of an individual
- 13. variation Differences among individuals within a population
- 15. effect A rapid reduction in population size that reduces genetic variation
- 17. selection Type of natural selection where individuals at both extremes have higher fitness than the average
Down
- 1. Movement of individuals into a population
- 2. effect When a small group separates and forms a new population with different allele frequencies
- 3. frequency Percent of individuals in a population with a particular allele, expressed as a number between 0 and 1
- 6. A necessary or desired commodity in an ecosystem that individuals compete for
- 7. pool All the genetic information, including all alleles, present in a population
- 9. Movement of individuals out of a population
- 11. Measurement of an individual’s ability to survive and reproduce successful offspring
- 13. isolation Isolation caused by physical barriers like mountains, rivers, or bodies of water
- 14. selection Process where individuals best suited to their environment have higher fitness
- 16. isolation Isolation caused by differences in behaviors such as mating rituals or communication
- 18. Group of individuals of the same species living in the same area at the same time that can interbreed