They can hate each other.
Genes.
a kidney
Blood relationship.
You are not related to the wife your mother's sister's husband's brother.
To speak at his wife's funeral.
gentic particles
You would call your wife's sister your sister-in-law. If your wife would have a brother he would be your brother-in-law. It is the same thing for a husband's siblings. Your wife's mother would be your mother-in-law. Her father would be father-in-law.
A present for the wife? Relationship issues?
If your sister-in-law is the sister of your spouse, her brother is the brother of your spouse and your brother-in-law. If you are a woman, and your sister-in-law is the sister of your husband, then her brother could also be your husband.If your sister-in-law is the wife of your brother, then her brother is not related to you.no relation
If your brother-in-law is the brother of your wife then his mother is your mother-in-law. If your brother-in-law is the husband of your sister, his mother is not related to you but is your sister's mother-in-law.
It depends.If your father's brother's wife -that is, your uncle's wife- is your friend's mother's sister -that is, your friend's aunt- then you and your friend are distant cousins by marriage.
Your uncles are the brothers of you mother or father, or the husbands of your parent's sisters.Your dad's sister-in-law could be the sister of his wife, your mother. In that case, her brother is also your mother's brother and is therefore your uncle.However, your dad's sister-in-law could be the wife of his brother. In that case, her brother is your dad's brother-in-law but is not related to you.