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5 Written questions

5 Matching questions

  1. continuous variation
  2. pleiotropy
  3. phenotype
  4. founder effect
  5. stabilizing selection
  1. a selection pressuresd that favor average phenotypes. Stabilizing sleection reduces the amount of variation in the population but doesn't alter the mean value of the trait.
  2. b ex: height in humans, birthweight
  3. c occurs when a new colony is started by a few peope from the original population. Not much diversity, usually mutations.
  4. d genes that influence multiple traits
  5. e the shown trait

5 Multiple choice questions

  1. chromosomes
  2. a FEATURE of an organism CREATED by the process of natural selection.
  3. the process of division of normal body cells through which new diploid cells are created
  4. a steady state in which two or more alleles coexist in a population.
  5. speciation that occurs when two or more populations of a single species are geographically isolated from each other and then diverge to form two or more new species

5 True/False questions

  1. reproductive isolationdriving force behind sympatric speciation extreme values for a trait are favored over intermediate values. E.g.: large nose rather than medium sized nose


  2. mutationa FEATURE of an organism CREATED by the process of natural selection.


  3. natural selectionthe process that produces adaptation


  4. character displacementthe process that produces adaptation


  5. parapatric speciationtwo-step process in speciation where selection causes the differentiation of geographically separate, isolated populations of a species and the populations become reproductively isolated as well