Question: When gametes from two different species are able to fuse to form a zygote, it may have different chromosome sets, causing it to fail to undergo mitosis properly. This is an example of (Click to select). A hybrid zygote created by the fusing of gametes from different species may grow into a sterile adult incapable of producing future offspring. This is an example of (Click to select) . Sometimes hybrids are capable of reproducing; however, their offspring are incapable of producing future offspring. This is an example of (Click to select) acting as a postzygotic isolating mechanism. Need Assignment Help?