Which sentence in the passage describes the benefits of sexual reproduction? During sexual reproduction, it’s important that the gametes from both partners are available. After mating, the gamete from the male, called sperm, fuses with the female gamete, called the ovum. Millions of sperm are produced by a male. But only one sperm manages to fertilize the ovum. The progeny has one set of genes from its mother and another set from its father. The fusion creates a unique recombinant blend in the offspring. The offspring has to reach sexual maturity before it can reproduce to create further offspring.