5 Written questions
5 Matching questions
- prezygotic barrier
- a Evolutionary change below the species level; change in the allele frequencies in a population over generations.
- b A reproductive barrier that impedes mating between species or hinders fertilization if interspecific mating is attempted.
- 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.
- 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.
- e An evolutionary process in which one species splits into two or more species.
5 Multiple choice questions
- The formation of new species in populations that live in the same geographic area.
- A fertile individual that has more than two chromosome sets as a result of two different species interbreeding and combining their chromosomes.
- A geographic region in which members of different species meet and mate, producing at least some offspring of mixed ancestry.
- A reproductive barrier that prevents hybrid zygotes produced by two different species from developing into viable, fertile adults.
- A definition of species in terms of measurable anatomical criteria.
5 True/False questions
ecological species concept → 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.
reproductive isolation → Evolutionary change below the species level; change in the allele frequencies in a population over generations.
autopolyploid → An individual that has more than two chromosome sets that are all derived from a single species.
allopatric speciation → The formation of new species in populations that live in the same geographic area.
hybrid → Offspring that results from the mating of individuals from two different species or from two true-breeding varieties of the same species.