Answer: One parent organism and no egg or sperm
fertile offspring despite geographical isolation.
Asexual reproduction is the mode of reproduction in which a single parent organism produces several offspring, without the production of gametes.
One parent organism and no egg or sperm : This type of reproduction occurs in simple organisms, which cannot develop specialized sex cells or organs, like eggs or sperms. A single parent reproduces either divide itself being in a cellular form to produce genetically and physically identical offspring.
Fertile offspring despite geographical isolation: In asexual reproduction, a single parent produced many offspring, the offsprings are genetically identical to their parents and are fertile. The geographical isolation refers to the barrier that comes in between the population of the same species, preventing them from mating. The geographical isolation cannot become a barrier for growth and abundance of population of asexually reproducing species because asexually reproducing organisms does not require mates for producing offsprings.