🧵 Untitled Thread
Anonymous at Mon, 9 Sep 2024 07:33:26 UTC No. 16369350
What causes outbreeding depression? Does it happen in humans too?
Anonymous at Mon, 9 Sep 2024 07:44:06 UTC No. 16369354
>>16369350
Specialization = survival.
blud at Mon, 9 Sep 2024 11:14:31 UTC No. 16369501
>>16369354
genius
Anonymous at Mon, 9 Sep 2024 13:49:27 UTC No. 16369736
>>16369350
you do get that you can have humongous strawberries in the middle of winter nowadays, right? fucking nigger.
Anonymous at Mon, 9 Sep 2024 13:55:26 UTC No. 16369743
>>16369736
Raphael put your name back on so I can filter you.
Anonymous at Mon, 9 Sep 2024 16:18:14 UTC No. 16369909
>>16369350
How about you read what you post retard.
>Absolute retard thought mixing a specialized animal with one with a different specialization will make only one arbitrarily desired animal
>Result is New animal, gets thrown into natural selection, isn't fit so it gets selected to die
Anonymous at Mon, 9 Sep 2024 16:34:10 UTC No. 16369930
>>16369350
Try to have a child with a chimpanzee and see how healthy it'll be.
Anonymous at Tue, 10 Sep 2024 22:55:55 UTC No. 16373354
Expecting anyone on /sci/ to know anything about anythng is a mistake.
Anonymous at Wed, 11 Sep 2024 00:11:48 UTC No. 16373447
>>16369909
This is a non-explanation that merely assumes a tale. Scientific beliefs are not founded on principles and so appeal to scientific principles is also invalid. You cannot assert any such thing definitively. More shockingly still, you didn't ask the first question that should come from such principles. Did they try a second time? Did another team try?
Anonymous at Wed, 11 Sep 2024 05:58:35 UTC No. 16373763
>>16369350
yeah it happens in humans basically. it's because evolution is dependent on coherence. when you mix, you get neither of what two populations are adapted for, or have unintended worse effects.
Anonymous at Wed, 11 Sep 2024 07:53:35 UTC No. 16373829
>>16369350
The pic you posted explains what causes it pretty clearly.
If you honestly looked at how many blacks you see in snowy environments and how many whites do you see around the equator per capita to this day, I think you could answer your own question.
Anonymous at Wed, 11 Sep 2024 07:55:33 UTC No. 16373831
>>16373447
>Did another team try?
Why don't you just read the OP pic yourself and see instead of asking questions that it already answered?
Anonymous at Wed, 11 Sep 2024 08:09:40 UTC No. 16373844
>>16369350
>What causes outbreeding depression?
Your own post explains it.
>Does it happen in humans
Yes, a well known case is that black people have troubles getting vitamin D in the far north. And white people living in very sunny regions (not always the tropics) get more skin cancer.
Seems like a nothing burger desu
Anonymous at Wed, 11 Sep 2024 08:12:18 UTC No. 16373847
you're wondering whether our natural enviroment has an impact on human reproduction?
Anonymous at Wed, 11 Sep 2024 08:16:36 UTC No. 16373851
>>16373829
>>16373844
I wondered if there's more to it than just environmental incompatibility?
If the genome becomes incompatible at some mechanistic level too or something.
Anonymous at Wed, 11 Sep 2024 12:45:51 UTC No. 16374136
How far apart do you need to be to get reproductive incompatibility?
Anonymous at Wed, 11 Sep 2024 12:56:23 UTC No. 16374150
>>16369350
Nah because we get hybrid vigour
Anonymous at Wed, 11 Sep 2024 13:07:54 UTC No. 16374167
>>16369350
In a certain sense think about your ancestry (White, black, Asian, hispanic) as being a set of genes which have undergone enough selection to "work together".
In most instances you can't just transfer genes across populations without first altering the haplotypes, which is the surrounding genetic variation. The only way to do this is over many many generations of recombination and mutation. It works the same way as you posted, just more with human behaviors and phenotypes.
Anonymous at Wed, 11 Sep 2024 13:20:43 UTC No. 16374196
>>16374136
Outbreeding depression is more of a spectrum than it is a binary thing. Technically speaking any level of population wide difference is enough, even something like the genetic difference between the English and Germans is enough.
Anonymous at Wed, 11 Sep 2024 13:23:27 UTC No. 16374203
Outbreeding and hybridisation can lead to such incompatibility than the population completely collapses.
Consequences of Hybridization in Mammals: A Systematic Review
https://www.mdpi.com/2073-4425/13/1
A subgroup with compatible genes might survive by breeding between themselves but complete collapse seems hard to avoid.
Anonymous at Wed, 11 Sep 2024 18:47:12 UTC No. 16374651
>>16373831
>believe muh lust provoking image
No
Anonymous at Wed, 11 Sep 2024 20:48:39 UTC No. 16374854
>>16369350
>Does it happen in humans too?
Congenital problems are more common amomg mixed race individuals.
>Risks of selected congenital malformations among offspring of mixed race-ethnicity
https://pubmed.ncbi.nlm.nih.gov/153
Anonymous at Wed, 11 Sep 2024 23:31:08 UTC No. 16375131
>>16374854
Everything wrong is more common with mixed racoids, but it's not clear if it's outbreeding dep or people who tend to race-mix have high mutational load.
Anonymous at Thu, 12 Sep 2024 21:31:05 UTC No. 16377594
>>16375131
>but it's not clear if it's outbreeding dep or people who tend to race-mix have high mutational load.
couldn't you correct for socio economic status of the parents?
Anonymous at Thu, 12 Sep 2024 21:49:33 UTC No. 16377618
Anonymous at Fri, 13 Sep 2024 03:56:49 UTC No. 16378002
>>16377618
black americans are already a mystery mix of various african tribes, 18% euros and some mystery asian genes with 33% euro y chomosomes, I wonder if they have many issues stemming from this? I recall seeing data comparing disease rates against more homogenous groups for i think cancer.
Anonymous at Fri, 13 Sep 2024 04:06:18 UTC No. 16378006
>Founder-specific inbreeding depression affects racing performance in Thoroughbred horses
https://www.ncbi.nlm.nih.gov/pmc/ar
>Conclusions
>In this study, we have presented the effects of inbreeding and selection in a very large population with extensive phenotypic and pedigree records. Our analyses have shown that genetic load can still persist in a population even after many generations of inbreeding. However, we have also found evidence that multiple generations of inbreeding for selection can have positive effects on the overall genetic value of a population. We suggest that using EBVs whilst managing inbreeding levels will increase the efficiency of selection to reduce inbreeding depression in subsequent generations. Further, our findings highlight the need for caution in studies with small sample sizes because they can lead to inaccurate inferences about the effects of inbreeding.
>We have also found evidence that the genetic load is unevenly distributed in the Thoroughbred population. This indicates that studies of inbreeding need to account for heterogeneity between different ancestors, because the total proportion of IBD alleles (alleles identical by descent) might not accurately reflect genetic load. Understanding the distribution of genetic load in the population will assist in breeding decisions to reduce disease alleles and improve the overall fitness of the population in future generations. Our findings open the possibility of evaluating the effects of particular individuals on the fitness of the population in order to improve phenotypic quality and reduce genetic load in the future.
>
Anonymous at Fri, 13 Sep 2024 06:58:34 UTC No. 16378137
>>16374651
>I definitely believe it is a thing because of the image, I just don't believe the rest of the big words in the image that confuse and anger me.
Anonymous at Fri, 13 Sep 2024 07:45:00 UTC No. 16378172
>>16375131
>people who tend to race-mix have high mutational load.
So the stereotype of it mostly being sexually low value white guys who racemix because they can't get white girls is actually true?
Anonymous at Fri, 13 Sep 2024 19:12:13 UTC No. 16379002
>>16378172
Not entirely you also have the hyper almost genocidal promotion of things like feminism. dating apps, slut culture, no fault divorce etc, etc towards primarily whites which destroys traditional feminine forms of beauty replcing them with the cock carousel "roastie" cat lady/betabux type, which leads men towards those who have culturally retained these normal profamily traits more.
It's a real muddle of compounding factors. Hoppe talked about how in the past mixing of ethnicities was limited to the upper classes of both cultures where you would express the best traits of either type while now it is promoted amongst the dysgenic underclass to create a new rootless mud slave racial group. I would counter this idea with the existence of Richard von Coudenhove-Kalergi. Although the social rejection of mixed race kids and their sense of alienation from the culture of either of their parents could play a factor in psychiatric issues.
but then for first gens you are still going to see a balance of traits from both parents, once you get into the second generation and onwards all bets are off. you would expect to see seriously mentally and physically deranged offspring emerge. One could argue that a pharmaceutical industry might promote this intermixing of the worse to create more potential patients.
Anonymous at Sat, 14 Sep 2024 20:47:21 UTC No. 16380671
>>16378172
Are there others? I'm not familiar with dating or relationship sterotypes. Are there any for other races?
Anonymous at Sun, 15 Sep 2024 05:57:38 UTC No. 16381346
>>16373851
> incompatible
you mean very advantageously compatible. a strong black man with a big black cock and a white woman is the peak of darwinian supremacy.
Anonymous at Sun, 15 Sep 2024 21:12:06 UTC No. 16382299
>>16369350
>what causes outbreeding depression
Imagine two populations with different dental structures. large mouth, large teeth vs small mouth with small teeth but both are selected for aesthetically pleasing jaw shapes.
if you muddle the popullation you'll see small teethe genes combined with big jaw genes creating a gappy jaw and small jaw genes combined with big teeth creating a crowded jaw.
neither will be as beautiful as the parental populations.
raphael at Mon, 16 Sep 2024 15:55:51 UTC No. 16383345
>>16369743
kek thats not me
Anonymous at Tue, 17 Sep 2024 01:22:42 UTC No. 16384029
>>16380671
Well, there is the obese white woman + black man pairing stereotype, which also ties in with the idea that race mixing is mostly being done by the sort of person who has issues in the first place.
Anonymous at Tue, 17 Sep 2024 02:14:21 UTC No. 16384073
>>16382299
That is a theory.
Anonymous at Tue, 17 Sep 2024 12:41:15 UTC No. 16384572
>>16384029
So that certainly suggests that outbreeding whites are self selecting for low quality genes, I'm curious then what the stereotypes from the second race category are, whether the asian women or black men are also lower or higher quality examples of their racial group
Anonymous at Wed, 18 Sep 2024 01:51:16 UTC No. 16385508
https://x.com/Airmanareiks/status/1
https://x.com/Airmanareiks/status/1
Anonymous at Thu, 19 Sep 2024 09:23:08 UTC No. 16387403
>>16384073
If it works that way in animals is it stil theory?
Anonymous at Fri, 20 Sep 2024 19:36:52 UTC No. 16389953
>>16384073
What's an alternative?
Anonymous at Fri, 20 Sep 2024 21:38:37 UTC No. 16390231
You can find quite reliable estimates of inbreeding depression effects in animal and plant studies.
Generally you find in populations with a tendency towards historical inbreeding that they don't experience significant inbreeding depression due to purging.
For outbreeding I'm not so familiar with the literature it seems less well explored since it's harder to regulate.