You are studying a potential case of incipient sympatric speciation involving two morphs of a cichlid fish in a crater lake that feed at different depths and differ in
jaw morphology. If true, which of the following statements would make sympatric speciation more likely (or at least possible)?
The two morphs feed on different food types, and there is strong disruptive selection operating such that individuals that are intermediate are very strongly
selected against (basically none survive).
The two morphs feed at different depths, but both morphs come to a rocky area near the shore to mate. Females prefer to mate with males of the other morph.
Mating occurs in the area of the lake where each morph feeds. Also, females choose males based on jaw morphology, preferring males that have the same jaw
morphology as the female.
The two morphs specialize on different food types; matings between the morphs produce offspring that are intermediate and can efficiently utilize both food
types.
