Vocab Crossword (chapters 16-17)

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Across
  1. 3. drift- Random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population.
  2. 4. well an organism can reproduce and survive in its environment.
  3. 5. effect- A change in allele frequency following a dramatic reduction in size of population.
  4. 8. trait- trait controlled by 1 or 2 more genes.
  5. 9. group of similar organisms that can breed and produce fertile offspring.
  6. 11. pool-The collection of genes in an interbreeding population that includes each gene at a certain frequency in relation to its alleles.
Down
  1. 1. selection- From of natural selection when individuals at one end of a distribution have higher fitness that individuals in the middle or the end of the curve.
  2. 2. Formation of a new species.
  3. 6. clock- Method used by researchers that uses mutation rates in DNA to estimate the length of time that 2 species have been evolving independently.
  4. 7. Preserved remains of an animal.
  5. 10. frequency- The # of times that an allele occurs in a gene pool compared with the # of alleles in that pool for the same gene.