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5 Written Questions

5 Matching Questions

  1. hybrid zone
  2. sympatric speciation
  3. species
  4. postzygotic barrier
  5. biological species concept
  1. a A reproductive barrier that prevents hybrid zygotes produced by two different species from developing into viable, fertile adults.
  2. b A population or 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.
  3. c 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.
  4. d The formation of new species in populations that live in the same geographic area.
  5. e A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry.

5 Multiple Choice Questions

  1. A definition of species in terms of measurable anatomical criteria.
  2. A 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.
  3. Evolutionary change below the species level; change in the allele frequencies in a population over generations.
  4. A definition of species as the smallest group of individuals that share a common ancestor, forming one branch on the tree of life.
  5. A reproductive barrier that impedes mating between species or hinders fertilization if interspecific mating is attempted.

5 True/False Questions

  1. allopatric speciationThe formation of new species in populations that are geographically isolated from one another.

          

  2. speciationAn evolutionary process in which one species splits into two or more species.

          

  3. polyploidyA chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division.

          

  4. macroevolutionEvolutionary change below the species level; change in the allele frequencies in a population over generations.

          

  5. allopolyploidA fertile individual that has more than two chromosome sets as a result of two different species interbreeding and combining their chromosomes.

          

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