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A sister marrying her brother would be incest and there would be a substantially increased risk of birth defect or genetic disease in the children of such a marriage. in all societies currently existing on the planet it is illegal for a sister to marry her brother.

not in all societies, but the rest is correct

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12y ago
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14y ago

Because most brothers and sisters dont fall in love And plus its illegal.

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Q: Is there a reason why sister and brother can't marry each other?
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Related questions

Can your brother-in-law marry you?

Your brother-in-law is not a blood relation, and neither is his brother. So yes, you could marry a brother-in-law's brother, if you wanted.My grandmother "R" married a man, "H"."H's" sister, "A", married my grandmother's brother, "L".So brother and sister in one family, married sister and brother of the other family. Love occurs in the strangest ways!


Can you marry ex sister-in-law even if both parties have kids and can you have kid each other?

Only if you are no longer married to her sister or brother and she is no longer married.


What is your sister's brother your?

Your sister's brother is your brother. Or yourself if she has no other male siblings.


Can a sister-in-law and brother-in-law marry?

Yes, unless they are close biological relatives like brother and sister etc. They are only in your family because you and your spouse got married. That does not make them related in any other way.


Can a boy from ratan bhardwaj gotra marry a girl from bhardwaj gotra?

According to Hindu Caste System people of similar gotras can not marry. Because they will be brother and sister of each other.


Does your sister-in-law become your ex-sister-in-law if you are divorced?

Yes; if your sister-in-law is the sister of your spouse, when you divorce your spouse she becomes your ex-sister-in-law. Unless you marry her. Then she becomes your wife. On the other hand, if your sister-in-law is the wife of your brother, her status has nothing to do with your marital status, but she would become your ex-sister-in-law if she and your brother divorced.


What's the relationship between a sister's brother and a sister's daughter?

Your sister's daughter and your sister's brother are niece and uncle to each other. The daughter is the niece of the brother and the brother is uncle to the daughter.


What is the relationship between your sister-in-law and your brother?

Your sister-in-law is either the wife of your brother or the sister of your spouse. If you have more than one brother, and your sister-in-law is the wife of one brother, then she is the sister-in-law of the other. If your sister-in-law is the sister of your spouse, she has no direct relationship to your brother. He can call her "my brother's sister-in-law", or "my nephew's aunt."


Can you marry your uncle's sister's daughter?

Your uncle-in-law is supposedly your uncle by marriage. Anyone who marries your parent's sister is your uncle by marriage, and you call that person your uncle, not uncle-in-law. His brother is certainly not related to you. Your husband's uncle is not related to you. If that is the person you are calling uncle-in-law, then his brother is fair game for marriage, assuming you have divorced or your husband has died. But then he is no longer your uncle-in-law and his brother is merely an older man who is not related to you.


Can a adopted sister marry her brother?

No, you cannot. An adopted child is considered a child of the parents in every legal sense. And you cannot marry a sibling. Actually, apparently you can. Look at actors, Linday and Bryan Price. Their parents were brother and sister by adoption. Their mom, adopted from Korea by the Price family married her brother. So, apparently, yes it is possible, under what circumstances and what they had to do to accomplish this I do not know.


Is it legally possible to marry a brother or sister?

yes they are not blood sisters or brother so you could married


How can your brother and sister become your brother- and sister-in-law?

Your brother or sister can never become your brother-in-law or sister-in-law. The people they marry are your brother-in-law or sister-in-law. Oh, yes, in a riddle, if your brother marries your sister, then your brother and sister are also your brother-in-law and your sister-in-law. But that kind of marriage is forbidden everywhere and by all modern religions, so it is a pretty poor riddle.