Biology Unit 6 Vocab

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Across
  1. 3. Migration of new individuals into a population.
  2. 9. A necessary or desired commodity in an ecosystem- individuals of a population will compete for these.
  3. 10. Collection of all the alleles present in a population.
  4. 11. Refers to the difference among individuals in a population.
  5. 12. Percent of individuals of a population that have a particular trait- expressed as a number 0 and 1.
  6. 13. Measurement of the ability of an individual to survive and reproduce successful offspring.
  7. 18. State of genetic equilibrium characterized by a large population, no migration, no natural selection, no mutations, and random mating.
  8. 19. Isolation of a population due to physical barriers such as a fence, mountain range, or body of water.
  9. 21. Isolation of a population due to differences in communication, mating rituals, or other behavior.
  10. 22. Selection within a population due to human interference and selection of desired traits.
  11. 23. Random changes in allele frequencies attributed to luck, Not fitness.
Down
  1. 1. When organisms impersonate other organisms to increase fitness.
  2. 2. Type of natural selection in which individuals at either side of the bell curve achieve higher fitness and the average is selected against.
  3. 4. Isolation of a population due to differences in time of mating.
  4. 5. Type of natural selection in which individuals with the average phenotype have an advantage and the extremes are selected against.
  5. 6. When a population experiences a rapid, drastic reduction in the number of individuals in the population- reduces variation and changes allele frequencies of the population.
  6. 7. Type of natural selection in which individuals w/ one extreme phenotype having the advantage and the other extreme is selected against.
  7. 8. Describes the movement of genes/ alleles/ individuals between a neighboring populations makes populations more alike.
  8. 14. Group of individuals of the same species that live in the same area at the same time and can interbreed.
  9. 15. Migration of individuals out of a population.
  10. 16. When a small part of a population is separated from the rest and colonizers a new area- often respond differently to the Natural Selection Pressures.
  11. 17. The idea that those individuals best suited to their environment will achieve higher fitness.
  12. 20. Any characteristic that increases the fitness of an individual.