When the London Underground (Subway)system Was Built in the Nineteenth

Multiple Choice

When the London underground (subway) system was built in the nineteenth century,mosquitoes moved into the tunnels and became adapted to biting the customers and small animals that inhabit the subway system.Like people,mosquitoes can freely enter and leave through the tunnel entrances.Recently,DNA analysis and attempts to cross-breed above-ground mosquitoes with underground mosquitoes indicate that there are now two different species.The underground insects are visibly larger.Which term best describes what has happened?

A) sympatric speciation
B) behavioral incompatibility
C) temporal isolation
D) population bottleneck