I see almost all Males on my commute.
After work I might see a few females riding for fun but the only gender I see with backpacks or Panniers on a mission are guys.
come to think of it most of the females on the MUP in the afternoon are using inline skates rather than on bikes.
I think one of the problems for females is the prep time needed for many dress nice type jobs. My other half is a teacher and She takes slightly over an hour to get ready in the AM and often thats not enough.
A purchasing agent at one of my customers said shes only 7 miles from home but the big hair would take some time and she lugs lots of stuff back and fourth.
for guys (at least for me) I get to work towel off , change , wash hair in sink ,brush hair and Im done 7 -10mins.
Dont think the gals could pull it off in that time frame.
But some do im sure
"John"