David Márquez [SEP] sex or gender
David Márquez
David Márquez Laguna (born October 13, 1977, in Barcelona, Catalonia) is a retired male race walker from Spain.
External links.
- sports-reference
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In the United States some scholars use the term “sex separation” and not sex segregation". 
The term gender apartheid (or sexual apartheid) also has been applied to segregation of people by gender, implying that it is sexual discrimination. If sex segregation is a form of sex discrimination, its effects have important consequences for gender equality and equity.
Types.
Sex segregation can occur in both public and private contexts, and be classified in many ways. Legal and gender studies scholar David S. Cohen