Across
- 3. describes the movement of genes/alleles/individuals between 2 neighboring populations
- 4. measurement of the ability of an individual to survive and reproduce succsessful offspring
- 7. a necessary or desired commodity in an ecosystem - individualsof a population will compete for these
- 8. any characteristic that increases the fitness of an individual
- 10. when a population experiences a rapid, drastic reduction in individuals in the population-reduces variation and changes allele frequencies
- 13. the idea that those individuals best suited to their environment will achive higher fitness
- 14. isolation of a population due to differences in communication, mating rituals, or other behaviors
- 15. state of genetic equalibrium characterized by a large population no migration, no natural selection, no mutations, and random mating
- 16. percent of individuals of a population that have a particular trait - expressed as a number between 0 and 1
- 18. type of natural selection in which individuals with one extreme phenotype have an advantage and the other extreme is selected against
- 19. isolation of a population due to physical barriers such as a fence, mountain range,or body of water
Down
- 1. refers to the differences among individuals in a population
- 2. random changes in allele frequencies attributed to luck, not fitness
- 5. type of natural selection in which individuals at either extreme of the bell curve achive higher fitness and the average is selected against
- 6. when organisms will impersonate other organisms to increse fitness
- 9. collecting of all the alleles present in a population - makes populations more alike
- 11. group of individuals of the same species that live in the same area at the same time and can be interbreed
- 12. when a small part of a population is seperated from the rest and colonizes a new area they often respond differently to natural selection pressures
- 17. migration of the individuals out of a population
- 20. migration of new individuals into a population