A current thread asks about improving the chances for a boy or a girl. That notion prompted me to wonder if there are situations (families more like) where some extended number of generations has produced all boys or all girls. Offhand, I can’t think of any.
In my own family:
Father’s siblings: 3 brothers, 1 sister (4b/1g counting Daddy)
Mother’s siblings: 2 sisters, 2 brothers (3g/2b counting Mama)
Father’s side first cousins (including my brother and me): 6 boys, 5 girls
Mother’s side first cousins (ditto): 5 boys, no girls (2 of Mama’s siblings were childless)
How about your own family or some friend’s family?
Anybody have two (or more) generations of all boys or all girls?
Anybody have a string of only-children?
(And, please, I’ve heard that old adage about “If your parents were sterile, chances are you will be, too.”)