The disadvantage of reproduction through fragmentation for flatworms is the limited genetic diversity of the offspring. Fragmentation occurs when the body of the parent flatworm breaks into two or more fragments, each of which can grow into a new individual. However, since the offspring are genetically identical to the parent, they have the same weaknesses and vulnerabilities. This lack of genetic diversity makes it difficult for them to adapt to changing environmental conditions or to resist diseases. In contrast, sexual reproduction allows for the mixing and reshuffling of genetic material, leading to greater genetic diversity and increased chances of survival for the offspring.
