___ is a mode of reproduction that involves fusion of female gamete and male gamete.
Sexual reproduction is characterised by the formation of a new individual by the union of two gametes.
In other words, sexual reproduction involves the fusion of female gamete (ovum) and male gamete (sperm). The fusion of these gametes occurs during fertilization. The result of the fusion is the formation of a zygote. The zygote develops into an offspring that is genetically distinct from the parent organisms. This is in contrast to asexual reproduction such as fragmentation, budding and fission, which is a mode of reproduction that does not involve the fusion of gametes to produce an offspring.