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5 Written questions

5 Matching questions

  1. biological species concept
  2. allopolyploid
  3. microevolution
  4. prezygotic barrier
  5. speciation
  1. a Definition of a species as a group of populations whose members have the potential to interbreed in nature and produce viable, fertile, offspring, but do not produce viable, fertile offspring with members of other such groups.
  2. b A fertile individual that has more than two chromosome sets as a result of two different species interbreeding and combining their chromosomes.
  3. c An evolutionary process in which one species splits into two or more species.
  4. d A reproductive barrier that impedes mating between species or hinders fertilization if interspecific mating is attempted.
  5. e Evolutionary change below the species level; change in the allele frequencies in a population over generations.

5 Multiple choice questions

  1. Offspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.
  2. A chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division.
  3. Evolutionary change above the species level. Examples of this type of change include the origin of a new group of organisms through a series of speciation events and the impact of mass extinctions on the diversity of life and its subsequent recovery.
  4. The formation of new species in populations that are geographically isolated from one another.
  5. A definition of species in terms of measurable anatomical criteria.

5 True/False questions

  1. punctuated equilibriaIn the fossil record, long periods of apparent stasis, in which a species undergoes little or no morphological change, interrupted by relatively brief periods of sudden change.

          

  2. reproductive isolationEvolutionary change above the species level. Examples of this type of change include the origin of a new group of organisms through a series of speciation events and the impact of mass extinctions on the diversity of life and its subsequent recovery.

          

  3. speciesAn evolutionary process in which one species splits into two or more species.

          

  4. sympatric speciationThe formation of new species in populations that live in the same geographic area.

          

  5. reinforcementIn evolutionary biology, a process in which natural selection strengthens prezygotic barriers to reproduction, thus reducing the chances of hybrid formation. Such a process is likely to occur only if hybrid offspring are less fit than members of the parent species.