Question

multiple select question
select all that apply
select all of the following that contributed to the adaptive radiation of darwins finches on the galapagos islands.
□ geographic isolation
□ allopolyploidy
□ repeated instances of gene flow from the mainland
□ vacant ecological niches
□ lack of many types of mainland birds

Explanation:

Geographic isolation allowed finches to evolve in isolation. Vacant ecological niches provided opportunities for different adaptations. Lack of many mainland - bird types reduced competition and allowed for specialization. Allopolyploidy is not a major factor in this case, and repeated gene - flow would likely homogenize rather than diversify the population.

Answer:

A. Geographic isolation
D. Vacant ecological niches
E. Lack of many types of mainland birds