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5 Written questions

5 Matching questions

  1. speciation
  2. prezygotic barrier
  3. polyploidy
  4. reinforcement
  5. microevolution
  1. a Evolutionary change below the species level; change in the allele frequencies in a population over generations.
  2. b A reproductive barrier that impedes mating between species or hinders fertilization if interspecific mating is attempted.
  3. c In 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.
  4. d A chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division.
  5. e An evolutionary process in which one species splits into two or more species.

5 Multiple choice questions

  1. The formation of new species in populations that live in the same geographic area.
  2. A fertile individual that has more than two chromosome sets as a result of two different species interbreeding and combining their chromosomes.
  3. A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry.
  4. A reproductive barrier that prevents hybrid zygotes produced by two different species from developing into viable, fertile adults.
  5. A definition of species in terms of measurable anatomical criteria.

5 True/False questions

  1. ecological species conceptA definition of species in terms of ecological niche, the sum of how members of the species interact with the nonliving and living parts of their environment.

          

  2. reproductive isolationEvolutionary change below the species level; change in the allele frequencies in a population over generations.

          

  3. autopolyploidAn individual that has more than two chromosome sets that are all derived from a single species.

          

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

          

  5. hybridOffspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.