7 ms·

It may not be a threat to the genetic diversity of humans at large but when there are so many siblings in a local area who don't know they are siblings then the

It may not be a threat to the genetic diversity of humans at large but when there are so many siblings in a local area who don't know they are siblings then the chance of recessive genetic disorders greatly increases

epicureanideal 3y ago
Seems like the sibling network they discuss where people can become aware of who's related to them would solve that problem. What are the odds that 500 out of 5 million people would match with each other?
- anonymouskimmer 3y ago
  It happens[1]. In part because people tend to find those who look similar to themselves most attractive[2]. There is a countering instinct to be repulsed by the idea of sex with people one was raised with[2], but this countering instinct doesn't happen if one wasn't raised with a family member. 1 - https://www.dailymail.co.uk/news/article-1311238/Brother-sister-didnt-know-related-marry--despite-knowing-union-illegal.html https://www.dailymail.co.uk/news/article-1311238/Brother-sis... > The couple, who hailed from different towns, about 100 miles apart, were both out with friends when they met in a nightclub in a third town several years ago. > So strong was their mutual attraction that just one week after meeting, they both felt they had known each other for a lifetime. 2 - https://www.psychologytoday.com/us/blog/the-mysteries-love/201505/are-we-attracted-people-who-look-us https://www.psychologytoday.com/us/blog/the-mysteries-love/2...
- deleted 3y ago
  [deleted]
- anonymouskimmer 3y ago
  > Seems like the sibling network they discuss where people can become aware of who's related to them would solve that problem. I'll also mention that such a sibling network can actually cause the problem. https://au.news.yahoo.com/half-siblings-with-two-children-together-fighting-for-right-to-marry-000207408.html https://au.news.yahoo.com/half-siblings-with-two-children-to... > After tracking down her half-brother on Facebook, Ms Parra eventually met Mr Parra and the pair felt attracted to one another. "We didn't want to realise it, we were angry with ourselves because it was hard to admit and break that taboo: we are siblings even though we didn't feel that way." > After just a few days, the half-siblings felt they couldn't carry on without seeing each other again. "Imagine liking a girl and, for a moral reason, being forbidden to be with her. It's really hard to deal with," Mr Parra declared.
akira2501 3y ago
They know precisely how they were parented and that the actual identity of one of their parents is technically unknown. These people will have to take a single additional genetic testing step in family planning to avoid the problem.
- kevviiinn 3y ago
  You seem to be making a big assumption, do all recipients of sperm donors explain that to their children? I'm highly skeptical People shouldn't have to go the route of genetic testing, which apparently has serious privacy implications, just to have kids
  - akira2501 3y ago
    > do all recipients of sperm donors explain that to their children? I don't have children, so my question may come across as callous, but how would you not? Aside from the genetic relatives issue there are a host of other medical issues and complications that arise from not having the full identity of the other parent. Considering that this particular part of the issue that can only arise in adulthood, I was sort of assuming that you'd almost certainly explain the situation to them by that point.
    - anonymouskimmer 3y ago
      You're ignoring that many people don't want to rock the boat. And anytime you tell a child that the person they thought was their daddy, isn't, you're rocking the boat. Regardless of the age of the child. If this is an un-partnered mother and her children, then sure, much less excuse to not tell the kid, and much less reason to not tell them. But for partnered couples there's an inherent friction built in.
    - kevviiinn 3y ago
      You're again making a huge assumption, that which assumes that all people who have children are so responsible or have as much forethought
- 3y ago
foldr 3y ago
>then the chance of recessive genetic disorders greatly increases It will increase somewhat, but not 'greatly'. At least, I would be interested to see some actual data on this for the case of the children of half siblings. For cousins the additional risk is very small: https://www.nytimes.com/2002/04/03/health/no-genetic-reason-to-discourage-cousin-marriage-study-finds.html https://www.nytimes.com/2002/04/03/health/no-genetic-reason-...

epicureanideal 3y ago

Seems like the sibling network they discuss where people can become aware of who's related to them would solve that problem. What are the odds that 500 out of 5 million people would match with each other?

anonymouskimmer 3y ago
It happens[1]. In part because people tend to find those who look similar to themselves most attractive[2]. There is a countering instinct to be repulsed by the idea of sex with people one was raised with[2], but this countering instinct doesn't happen if one wasn't raised with a family member. 1 - https://www.dailymail.co.uk/news/article-1311238/Brother-sister-didnt-know-related-marry--despite-knowing-union-illegal.html https://www.dailymail.co.uk/news/article-1311238/Brother-sis... > The couple, who hailed from different towns, about 100 miles apart, were both out with friends when they met in a nightclub in a third town several years ago. > So strong was their mutual attraction that just one week after meeting, they both felt they had known each other for a lifetime. 2 - https://www.psychologytoday.com/us/blog/the-mysteries-love/201505/are-we-attracted-people-who-look-us https://www.psychologytoday.com/us/blog/the-mysteries-love/2...
deleted 3y ago
[deleted]
anonymouskimmer 3y ago
> Seems like the sibling network they discuss where people can become aware of who's related to them would solve that problem. I'll also mention that such a sibling network can actually cause the problem. https://au.news.yahoo.com/half-siblings-with-two-children-together-fighting-for-right-to-marry-000207408.html https://au.news.yahoo.com/half-siblings-with-two-children-to... > After tracking down her half-brother on Facebook, Ms Parra eventually met Mr Parra and the pair felt attracted to one another. "We didn't want to realise it, we were angry with ourselves because it was hard to admit and break that taboo: we are siblings even though we didn't feel that way." > After just a few days, the half-siblings felt they couldn't carry on without seeing each other again. "Imagine liking a girl and, for a moral reason, being forbidden to be with her. It's really hard to deal with," Mr Parra declared.

akira2501 3y ago

They know precisely how they were parented and that the actual identity of one of their parents is technically unknown. These people will have to take a single additional genetic testing step in family planning to avoid the problem.

kevviiinn 3y ago
You seem to be making a big assumption, do all recipients of sperm donors explain that to their children? I'm highly skeptical People shouldn't have to go the route of genetic testing, which apparently has serious privacy implications, just to have kids
- akira2501 3y ago
  > do all recipients of sperm donors explain that to their children? I don't have children, so my question may come across as callous, but how would you not? Aside from the genetic relatives issue there are a host of other medical issues and complications that arise from not having the full identity of the other parent. Considering that this particular part of the issue that can only arise in adulthood, I was sort of assuming that you'd almost certainly explain the situation to them by that point.
  - anonymouskimmer 3y ago
    You're ignoring that many people don't want to rock the boat. And anytime you tell a child that the person they thought was their daddy, isn't, you're rocking the boat. Regardless of the age of the child. If this is an un-partnered mother and her children, then sure, much less excuse to not tell the kid, and much less reason to not tell them. But for partnered couples there's an inherent friction built in.
  - kevviiinn 3y ago
    You're again making a huge assumption, that which assumes that all people who have children are so responsible or have as much forethought
3y ago

foldr 3y ago

>then the chance of recessive genetic disorders greatly increases It will increase somewhat, but not 'greatly'. At least, I would be interested to see some actual data on this for the case of the children of half siblings. For cousins the additional risk is very small: https://www.nytimes.com/2002/04/03/health/no-genetic-reason-to-discourage-cousin-marriage-study-finds.html https://www.nytimes.com/2002/04/03/health/no-genetic-reason-...