Final answer:
Sexual reproduction allows for greater genetic variation and occurs only in eukaryotes, while asexual reproduction results in offspring with identical DNA to the parent and can occur in both prokaryotes and eukaryotes.
Step-by-step explanation:
Sexual reproduction is characterized by combining the genetic material of two individuals, which allows for greater genetic variation. In contrast, asexual reproduction produces offspring that have the same DNA as the parent.
This mode of reproduction can occur in both prokaryotes and eukaryotes, with methods such as binary fission, fragmentation, and budding. However, sexual reproduction occurs only in eukaryotes, and it has the advantage of creating genetically diverse populations, which may be better suited for survival in changing environments.