Two species of pines, Pinus radiata and Pinus muricota, live in the same regions of California and are capable of forming hybrids under laboratory conditions. However, they do not interbreed because one releases pollen in February and the other in April. What genetic isolating mechanism is involved?

Question

Quizplus · Accepted Answer

Temporal isolation is the mechanism involved here, as the two species of pines release pollen at different times (February and April), preventing them from interbreeding despite living in the same region.

Two Species of Pines, Pinus Radiata and Pinus Muricota, Live