Fact 1: Sexual reproduction increases genetic diversity.

Fact 2: Evolution requires genetic diversity.

Given the two facts above, answer the question "What begins evolution?" with the following options: 
- haploid plants
 - the Moon
 - sexual reproduction
 - asexual reproduction
 - Nurseries of the ocean.
 - single-celled organisms
 - animals with backbones
 - extinction


 

   sexual reproduction      