What is the occurrence of twin boys?

Answer by  brandi10 (816)

Twin boys happen to occur more often than twin girls. This has been researched several times over the last few decades but still remains a scientific mystery. Many scientists beleive it happens becuase boys occur more with fraternal twins than identitical. Identical sets are more common in girls. However, genes play a role too.

Answer by  jaime24 (744)

I dont think it is true that there are more twin girls, then boys. I think it mattersw on who you happen to know. I know more twin boys then i do girls. I think there are fewer sets of twins that are born a boy and a girl though.