Both oppose strict division of family roles along gender lines.

Children separate parents and define their roles along traditional gender lines.

Within the industry, the issue seems to have created a difference in perspective that cuts roughly along gender lines.

And your observation is that it splits pretty much along gender lines.

At some point the population of the world splits along gender lines.

In one study, first dates were highly scripted along gender lines.

The workers were categorized into the usual racial and gender lines of the day.

The case split the court, 4 to 3, along gender lines.

Blame fell down gender lines, anger and fear thrown all around me.

Cutting across gender lines is the issue of alcohol and drugs.