Complete an essay on the evolutionary origin of sex (less than 800 words).
• The essay must contain no less than 5 references from scientific publications primaries (not reviews). Internet pages and textbooks are not accepted.
• These guiding questions will allow them to approach the essay with solid argumentation, justification and order:
1. Considering that prokaryotes reproduce by fission, how do mitosis and meiosis originate in eukaryotes?
2. Do all eukaryotic organisms reproduce sexually?
3. What is the advantage of sex?
4. Does sex have a symbiotic origin?