Budding: A Type Of Asexual Reproduction When An Organism Is Developed Because Its Parents Divided Themself Into Two Equal Parts.
Fragmentation: A Type Of Asexual Reproduction Where An Organism Splits Off Into Fragments To Later Be Developed Into A Fully Mature Individual That Is A Clone Of The Original Organism
What do you mean by responsible? Do you want to know the genetics behind it, what the surface markers do, or why they are metically important? I think I can help.