During a severe windstorm on an isolated island, some pollen and seeds from conifers are carried high into the air in a cloud of dust. In which of these situations would the dust cloud containing the seeds and pollen be considered an agent for gene flow?

Question

A The dust cloud is subjected to an extended period of ultraviolet radiation, causing a mutation in a gene of the conifer seeds.
® The dust cloud settles, and a few of the conifer seeds return to the same environment.
© The dust cloud is subjected to electromagnetic radiation from the sun, causing the pollen to be unable to
pollinate flowers.
D The dust cloud settles over a forest on a distant, isolated island and pollinates some conifer trees in that forest.

Answer 1

D The dust cloud settles over a forest on a distant, isolated island and pollinates some conifer trees in that forest.