Number 1 and 2 seeds have largely dominated the NCAA women's tournament bracket ever since the NCAA started fielding a tourney back in 1982. In fact in 5 of the last 8 years the women's Final Four has been totally comprised of number 1 and 2 seeds. To go one step further we can actually say that in recent history number 1 seeds have ruled the NCAA women's tournament bracket as there have been three number 1 seeds in four of the last six Final Fours. Some more women's tournament facts:
Number 1 and 2 seeds have completely filled 13 out of 26 Final Fours since the NCAA women's tournament began in 1982.
Only 6 teams seeded lower than number 4 have ever made the women's Final Four.