I have five siblings, all brothers, do you have siblings?
I have no siblings, because I don't share my parents with anyone!  I'm an only child.
I know people who have half siblings, they share one parent.
I am sorry I missed out playing a role in someone's else's life as their sibling, whether half, whole, or step.
Step siblings is when there is no blood relation but the parents have married making the children step siblings
Yeah, that happens, and sometimes there are siblings who grow up in separate homes.
Yes, there are some studies being done on birth order of siblings as related to success
Supposedly birth order determines things about your personality.  Did you find this to be the case with you and your siblings?