The bible states that the 144,000 anointed are to be virginal men.
Gal.3 says ......
So in Christ Jesus you are all children of God through faith, 27 for all of you who were baptized into Christ have clothed yourselves with Christ. 28 There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus. 29 If you belong to Christ, then you are Abraham’s seed, and heirs according to the promise.
It would appear that the jurisdiction /class between men and women was used as metaphor of equality, not that there is going to occur a sex change when you reach heaven.