Question

the great diversity of cichlids in lake victoria may be attributed to ________. periods of isolation when water levels dropped unusually high levels of autopolyploidy multiple hybridization events multiple colonization events by several ancestors

Explanation:

When water levels in Lake Victoria dropped, cichlid populations became isolated. This led to allopatric speciation and genetic divergence over time, contributing to their great diversity. Autopolyploidy, hybridization, and multiple - colonization events are not the main factors for this diversity.

Answer:

periods of isolation when water levels dropped