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5 Written questions

5 Matching questions

  1. microevolution
  2. hybrid
  3. species
  4. autopolyploid
  5. phylogenetic species concept
  1. a Evolutionary change below the species level; change in the allele frequencies in a population over generations.
  2. b An individual that has more than two chromosome sets that are all derived from a single species.
  3. c Offspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.
  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 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.

5 Multiple choice questions

  1. 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.
  2. 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.
  3. A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry.
  4. A definition of species in terms of measurable anatomical criteria.
  5. 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 True/False questions

  1. prezygotic barrierA reproductive barrier that prevents hybrid zygotes produced by two different species from developing into viable, fertile adults.

          

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

          

  3. biological species conceptDefinition 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. allopatric speciationThe formation of new species in populations that live in the same geographic area.

          

  5. speciationA 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.

          

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