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5 Written questions

5 Matching questions

  1. genetic equilibrum
  2. temporal isolation
  3. allele frequency
  4. molecular clock
  5. homologous structures
  1. a the number of times an allele occurs in a gene pool, compared to the total number of alleles in that pool for the same gene
  2. b situation in which allele frequencies in a population remain the same
  3. c form of reproductive isolation in which two or more species reproduces at the same time
  4. d uses mutation rates in DNA to estimate the time that two species have been evolving independently
  5. e structures that are shared by related species and that have been inherited from a common ancestor

5 Multiple choice questions

  1. inherited from ancestors but have lost much or all of their original function due to different selection pressures acting on the descendant
  2. 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
  3. any heritable characteristic that increases an organism's ability to survive and reproduce in its environment
  4. states that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change
  5. preserved remains or traces of ancient organisms

5 True/False questions

  1. reproductive isolationseparation of a species or population so that they no longer interbreed and evolve into two separate species


  2. disruptive selectionoccurs when individuals at one end of the curve have higher fitness than individuals in the middle or at the other end


  3. behavioral isolationform of reproductive isolation in which two or more species reproduces at the same time


  4. gene poolconsists of all the genes, including all the different alleles for each gene, that are present in the population


  5. speciesthe formation of a new species


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