A population of hammerheads shows variation in size of adults. The large adults can swim more quickly and catch more prey than the smaller adults. Because of this, the smaller adults begin feeding at a different time of day than the large adults. Over the next few generations, there appears diurnal schedules for hammerhead feeding, with the large adults feeding in the daytime, and the small adults feeding at night. Although some of the large and small adults interbreed, for the most part these populations keep to themselves and each adapt separately: the large adults grow bigger, and the small adults adapt better eyesight in low light. What type of speciation would this be considered?
A population of hammerheads shows variation in size of adults. The large adults can swim more quickly and catch more prey than the smaller adults. Because of this, the smaller adults begin feeding at a different time of day than the large adults. Over the next few generations, there appears diurnal schedules for hammerhead feeding, with the large adults feeding in the daytime, and the small adults feeding at night. Although some of the large and small adults interbreed, for the most part these populations keep to themselves and each adapt separately: the large adults grow bigger, and the small adults adapt better eyesight in low light. What type of speciation would this be considered?
parapatric
allopatric
sympatric