Population Genetics

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Across
  1. 3. change in the sequence of genes in DNA
  2. 6. version of a gene that controls a particular feature of an organism
  3. 7. a population of physically similar, interbreeding organisms that do not breed with other groups
  4. 8. ______ genes: determine which part of the embryo develops and when they are expressed
  5. 11. smallest unit that can evolve
  6. 13. _______ selection: individuals near the center of the curve have higher fitness
  7. 14. evolutionary _______: the success in passing genes to the next generation
  8. 17. any change in the frequency of alleles in a population over time
  9. 20. _______ selection: individuals at the upper and lower ends of the curve have a higher fitness
  10. 21. ______ isolation: the populations are physically separated by a barrier
  11. 22. (2 words) a random change in allele frequency
  12. 24. genetic ______: change in allele frequency following a dramatic reduction
  13. 25. genetic ______: caused by mutations, genetic recombination, and lateral gene transfer
  14. 26. _________ trait: a trait that is controlled by more than one gene
Down
  1. 1. (3 words) when genes are passed from one individual to another that is not an offspring
  2. 2. (2 words) all genes present in a population, including alleles for each gene
  3. 4. genetic ______: the allele frequency in a gene pool is not changing
  4. 5. genetic ______: when offspring are born with a combination of traits from both parents
  5. 6. evolutionary _______: any genetically controlled trait that increases an individual's ability to pass along its alleles
  6. 7. when a group within a species seperates from the original group and develops their own unique characteristics
  7. 9. (2 words) the number of times an allele occurs in a gene pool
  8. 10. list of assumptions made for populations to not be evolving
  9. 12. evolutionary ______: study of how organisms develop and its implications for evolution
  10. 15. ______ isolation: the population begins to reproduce at different times
  11. 16. (2 words) allele frequencies change as a result of migration of a small subgroup
  12. 18. _______ selection: individuals at one end of the curve have higher fitness
  13. 19. plays largest role in natural selection
  14. 23. ______ isolation: the presence or absence of a specific behavior preventing reproduction