i believe if u take one piece of pollen, touch it to a pistil, and it will make one seed. that seed will have the dna from the mother, and the father u got the pollen from. then if u take another males pollen and do the same thing on another branch, that second seed will have the second fathers genetics. the only problem i can see from this is that u dont know which seeds r which, unless u mark the branches or something
i dont really KNOW this is how it works, i just think it does haha