In chess it is often informally said that there are men's tournaments and women's tournaments. Actually it is not true. There are open tournaments, in which both men and women can participate. And then are tournaments for women only. This means that female chess players have a choice whether to play in the (stronger) open tournaments or in the (weaker) women's tournaments.
How is this in tennis? Can a top woman player like Swiatek choose to participate in a top men's tournament? Would Swiatek then have to go through a tough qualifying tournament?