9. Match the term to its correct definition (1pt) A. hom ologous structures B. punctuated equilibrium C. allopolyploid D. gam etic barrier E. species model for rapid speciation that can occur when an event causes a small portion of a population to be cut off from the rest of the population prezygotic barrier occurring when closely related individuals of different species mate, but differences in their gam ete cells (eggs and sperm) prevent fertilization from taking place parallel structures in diverse organisms that have a common ancestor group of populations that interbreed and produce fertile offspring polyploidy formedbetween two related, but separate species.