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

2.   The variety of relationships between the Novice and the introducer is clearly differentiated along gender lines.

3.   At the appellate level, the three-judge panel split revealingly along gender lines.

4.   Behavior within this group is ritualized and sharply divided along gender lines.

5.   Boys and girls should be encouraged to talk, together, about their differences and their similarities, and to make friends across gender lines.

6.   A fatal inability to communicate across gender lines, according to several experts, has stoked intermittent hostilities into full-scale gender warfare.

7.   Abuse has crossed gender lines.

8.   But oddly, the film transcends gender lines despite its subject matter.

9.   But the great cats do not establish class systems along gender lines, as social animals usually do.

10.   But the gender line is being broken.