over time, with selective breeding, and more plants than two. you could keep selectively imbreed until you have stableized your own cross. imbreeding is essential for stableizing a strain. just like dog breeding, thats how they produce plants or anything else that will seem like clones of others. you must be carefull not to breed without a goal in mind ahead of time. also male and female plants will provide diff. traits to their offspring. for ex. females usualy provide the smell & taste, but males usualy determin the amount of smell & taste. so a very skunky male crossed with a faintly mango flavored female would probably throught mostly very mango flavored plants. the best thing about plants is if you got the time you can get fast results indoors.