18.2: Visual Connection Questions

Figure 18.14 Which is most likely to survive, offspring with 2n+1 chromosomes or offspring with 2n-1 chromosomes?

Figure 18.22 If two species eat a different diet but one of the food sources is eliminated and both species are forced to eat the same foods, what change in the hybrid zone is most likely to occur?

Figure 18.23 Which of the following statements is false?

1. Punctuated equilibrium is most likely to occur in a small population that experiences a rapid change in its environment.
2. Punctuated equilibrium is most likely to occur in a large population that lives in a stable climate.
3. Gradual speciation is most likely to occur in species that live in a stable climate.
4. Gradual speciation and punctuated equilibrium both result in the evolution of new species.