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Tennessee legislature passes bill banning marriage between first cousins
(www.theguardian.com)
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this post was submitted on 12 Apr 2024
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I tend to agree. There’s only minor biological issues with marrying a cousin, around a 3% increase in birth defects if my quick google is correct. It’s only a cascading problem like people expect when it happens over and over in the same family tree… (or should I say family stick?)
Interesting.
Direct family incestuous offspring seems to have a 50% chance of having genetics disorders.
The stuff for first cousins is even more interesting!
The above is from Wikipedia.
So basically, banning incestuous childbirth for first cousins is equivalent to banning women from having children when above 41 years old.
What if the cousins are over 40?
They'll probably need some Viagra.
It's a multigenerational issue with first cousin marriage. The coefficient of inbreeding increases as generations with repeated first cousin marriage.
Cultures where first cousin marriage is allowed have double the number of babies born with birth defects. They also are thought to have a higher rate of miscarriage.
Some insular small religious groups have an inbreeding coefficient so high that every marriage in the group is the equivalent to that of siblings. A small