5 Written questions
5 Matching questions
- biological species concept
- prezygotic barrier
- 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.
- b A fertile individual that has more than two chromosome sets as a result of two different species interbreeding and combining their chromosomes.
- c An evolutionary process in which one species splits into two or more species.
- d A reproductive barrier that impedes mating between species or hinders fertilization if interspecific mating is attempted.
- e Evolutionary change below the species level; change in the allele frequencies in a population over generations.
5 Multiple choice questions
- Offspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.
- A chromosomal alteration in which the organism possesses more than two complete chromosome sets. It is the result of an accident of cell division.
- 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.
- The formation of new species in populations that are geographically isolated from one another.
- A definition of species in terms of measurable anatomical criteria.
5 True/False questions
punctuated equilibria → 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.
reproductive isolation → 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.
species → An evolutionary process in which one species splits into two or more species.
sympatric speciation → The formation of new species in populations that live in the same geographic area.
reinforcement → 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.