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5 Written questions

5 Matching questions

  1. phylogenetic species concept
  2. hybrid zone
  3. macroevolution
  4. sympatric speciation
  5. hybrid
  1. a Offspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.
  2. b The formation of new species in populations that live in the same geographic area.
  3. c A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry.
  4. d A definition of species as the smallest group of individuals that share a common ancestor, forming one branch on the tree of life.
  5. e 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.

5 Multiple choice questions

  1. 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. A reproductive barrier that prevents hybrid zygotes produced by two different species from developing into viable, fertile adults.
  3. 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. In 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.
  5. An evolutionary process in which one species splits into two or more species.

5 True/False questions

  1. morphological species conceptA definition of species in terms of measurable anatomical criteria.

          

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

          

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

          

  4. 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.

          

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