Multiple Choice Questions

Gene flow- Gene flow refers to the transfer of alleles among populations. As long as populations are exchanging alleles, speciation is unlikely.
  • What is the most important factor that holds a gene pool of a species together and prevents speciation?
  • Which of the following is the first step in allopatric speciation?
  • Which of the following has been shown to cause speciation most rapidly?
  • Which of these is an example of temporal isolation?
a set of organisms with a unique genetic history
  • Which of the following has been shown to cause speciation most rapidly?
  • According to the _____ model, evolution occurs in spurts; species evolve relatively rapidly then remain unchanged for long periods.
  • Two animals are considered members of different species if they _____.
  • According to the phylogenetic species concept, what is a species?
punctuated equilibrium- This is the definition of punctuated equilibrium.
  • According to the _____ model, evolution occurs in spurts; species evolve relatively rapidly then remain unchanged for long periods.
  • Which of the following has been shown to cause speciation most rapidly?
  • What is the most important factor that holds a gene pool of a species together and prevents speciation?
  • According to the phylogenetic species concept, what is a species?
the appearance of a new species in the same area as the parent population- It is due to a radical change in the genome.
  • Sympatric speciation is _____.
  • What is the most important factor that holds a gene pool of a species together and prevents speciation?
  • A certain species of salamander was split into two populations by a wide, dry valley, and the populations began to diverge from each other. After a period of time, some members of the two populations began to interbreed in a hybrid zone at the southern end of the valley. Only weak reproductive barriers existed by this time, so the two populations could freely interbreed and re-establish gene flow. This outcome in a hybrid zone is known as _____.
  • Which of these is an example of temporal isolation?
- fusionFusion refers to the weakening of reproductive barriers, allowing the two populations to fuse and remain (or become) one species.
  • Sympatric speciation is _____.
  • A certain species of salamander was split into two populations by a wide, dry valley, and the populations began to diverge from each other. After a period of time, some members of the two populations began to interbreed in a hybrid zone at the southern end of the valley. Only weak reproductive barriers existed by this time, so the two populations could freely interbreed and re-establish gene flow. This outcome in a hybrid zone is known as _____.
  • According to the _____ model, evolution occurs in spurts; species evolve relatively rapidly then remain unchanged for long periods.
  • What is the most important factor that holds a gene pool of a species together and prevents speciation?
cannot mate and produce viable, fertile offspring.- If two individuals cannot interbreed and produce viable, fertile offspring, they are members of different species.
  • What is the most important factor that holds a gene pool of a species together and prevents speciation?
  • Which of these is an example of temporal isolation?
  • Hybrid zones provide an opportunity to investigate _____.
  • Two animals are considered members of different species if they _____.
the evolution of reproductive isolation- A hybrid zone allows researchers to see what happens when closely related species come together. Reproductive barriers may be strengthened or weakened, depending on environmental and genetic factors.
  • Two animals are considered members of different species if they _____.
  • Which of the following is the first step in allopatric speciation?
  • Which of these is an example of temporal isolation?
  • Hybrid zones provide an opportunity to investigate _____.
0 h : 0 m : 1 s

Multiple Choice Questions
Answered Not Answered Not Visited Correct : 0 Incorrect : 0