how is having both genders beneficial to some organisms?

Question: how is having both genders beneficial to some organisms?
- Keywords:
  beneficial,
  gender,
  organisms
Asked by The Intellects to Mel on 29 Sep 2014.
- Melissa Kapulu answered on 29 Sep 2014:
  
  @The Intellects. Thank you very much for your fantastic question.
  
  One of the major benefits for some organisms to have both sexes or reproductive organs (genders) is to ensure that all the hereditary material, called genes, are passed onto the next generation. This therefore ensures that the organism survives from one generation to the next.
  
  Organisms with both sexes or reproductive organs are referred to as hermaphrodites. Do you know of any examples of organisms with both sexes? I will start with one. Some plants are hermaphrodites, having both the male and female reproductive parts. Please let me know of some examples of this you might know.

Question: how is having both genders beneficial to some organisms?