Studies on the detrimental effects of race-mixing:
Mixed race children suffer from more health problems.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1448064/
Race mixing leads to outbreeding depression & pairings of non-complementary traits.
A massively well-funded study of over 100,000 schoolchildren found that “Adolescents who identify themselves as mixed race are at higher health and behavior risk than those of 1 race.” Indeed, even when controlling for education, socioeconomic status, and other factors, there is an across-the board higher rate of health risks amongst mixed race adolescents than mono-racial adolescents.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1448064/
One study found that White-Asian mixes had a 2x higher rate of being “diagnosed with a psychological disorder, such as anxiety, depression or substance abuse.”
http://www.eurekalert.org/pub_releases/2008-08/uoc--baa081108.php
A study on Black-White mixes in agreement found that ”When it comes to engaging in risky/anti-social adolescent behavior, however, mixed race adolescents are stark outliers compared to both blacks and whites.” This holds true despite being raised in similar environments to mono-racial children.
http://www.msu.edu/~renn/RHE-_mixed_race.pdf
Often race-deniers and cultural Marxists will bring up Haldane’s rule, arguing that since races can mix and create fertile offspring, the genetic distance is not too great. Haldane’s rule is “when in the offspring of two different animal races one sex is absent, rare, or sterile, that sex is the heterogametic [XY] sex.”
http://www.nature.com/scitable/topicpage/haldane-s-rule-the-heterogametic-sex-1144
Indeed, although Black-White mixes are not sterile and males are not absent, males (the heterogametic sex) are more rare than females.
http://www.jstor.org/pss/1537084
The argument regarding Haldane’s rule is also meaningless because different species in the animal kingdom can breed and still produce fertile offspring. The wolf (Canis lupus) and the dog (Canis lupus familiaris), the coyote (Canis latrans), and the common jackal (Canis aureus) are separate species yet can all interbreed and produce fertile offspring.
http://www.jstor.org/discover/10.2307/3671304?uid=3739600&uid=2&uid=4&uid=3739256&sid=47699085472247
Two species of orangutan (Pongo abellii from Sumatra and Pongo pygmaeus from Borneo) can interbreed despite having different chromosomal numbers.
http://www.nytimes.com/1995/02/28/science/orangutan-hybrid-bred-to-save-species-now-seen-as-pollutant.html?pagewanted=all&src=pm
The common chimpanzee (Pan troglodytes) and the bonobo (Pan paniscus) and many species of birds, such as the pintail (Anas acuta) and the mallard (Anas platyrhynchos), can interbreed as well.
http://www.sciencedaily.com/releases/2007/04/070420104723.htm
http://birdaz.com/blog/2011/02/24/mallards-the-weird-and-the-wonderful/
The gibbon and the siamang can also interbreed to produce a hybrid
http://www.ncbi.nlm.nih.gov/pubmed/451603
http://www.ncbi.nlm.nih.gov/pubmed/1060807
Some species that aren’t even in the same genus can interbreed.
http://aob.oxfordjournals.org/content/74/2/111.full.pdf
Population researchers at Penn State University studied DNA samples from groups of African Americans throughout the US, West Africa, and Europe, to answer the question; How African are African Americans?
What they discovered contradicts some of the previous studies on the subject where it was thought that Blacks were about 30% white. They conclude that the average Black American is 17-18% white.
https://blackdemographics.com/geography/african-american-dna/?fbclid=IwAR0LVVZSdn7NQlbIeF5HFwfzfqLHLKdWFfPIC9MTNtMAKLkOSKIzxnpS3r8
This ~18% ancestry is the cause of multiple negative health effects due to genetic incompatibility.
Mixed race children suffer from more health problems.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1448064/
Race mixing leads to outbreeding depression & pairings of non-complementary traits.
A massively well-funded study of over 100,000 schoolchildren found that “Adolescents who identify themselves as mixed race are at higher health and behavior risk than those of 1 race.” Indeed, even when controlling for education, socioeconomic status, and other factors, there is an across-the board higher rate of health risks amongst mixed race adolescents than mono-racial adolescents.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1448064/
One study found that White-Asian mixes had a 2x higher rate of being “diagnosed with a psychological disorder, such as anxiety, depression or substance abuse.”
http://www.eurekalert.org/pub_releases/2008-08/uoc--baa081108.php
A study on Black-White mixes in agreement found that ”When it comes to engaging in risky/anti-social adolescent behavior, however, mixed race adolescents are stark outliers compared to both blacks and whites.” This holds true despite being raised in similar environments to mono-racial children.
http://www.msu.edu/~renn/RHE-_mixed_race.pdf
Often race-deniers and cultural Marxists will bring up Haldane’s rule, arguing that since races can mix and create fertile offspring, the genetic distance is not too great. Haldane’s rule is “when in the offspring of two different animal races one sex is absent, rare, or sterile, that sex is the heterogametic [XY] sex.”
http://www.nature.com/scitable/topicpage/haldane-s-rule-the-heterogametic-sex-1144
Indeed, although Black-White mixes are not sterile and males are not absent, males (the heterogametic sex) are more rare than females.
http://www.jstor.org/pss/1537084
The argument regarding Haldane’s rule is also meaningless because different species in the animal kingdom can breed and still produce fertile offspring. The wolf (Canis lupus) and the dog (Canis lupus familiaris), the coyote (Canis latrans), and the common jackal (Canis aureus) are separate species yet can all interbreed and produce fertile offspring.
http://www.jstor.org/discover/10.2307/3671304?uid=3739600&uid=2&uid=4&uid=3739256&sid=47699085472247
Two species of orangutan (Pongo abellii from Sumatra and Pongo pygmaeus from Borneo) can interbreed despite having different chromosomal numbers.
http://www.nytimes.com/1995/02/28/science/orangutan-hybrid-bred-to-save-species-now-seen-as-pollutant.html?pagewanted=all&src=pm
The common chimpanzee (Pan troglodytes) and the bonobo (Pan paniscus) and many species of birds, such as the pintail (Anas acuta) and the mallard (Anas platyrhynchos), can interbreed as well.
http://www.sciencedaily.com/releases/2007/04/070420104723.htm
http://birdaz.com/blog/2011/02/24/mallards-the-weird-and-the-wonderful/
The gibbon and the siamang can also interbreed to produce a hybrid
http://www.ncbi.nlm.nih.gov/pubmed/451603
http://www.ncbi.nlm.nih.gov/pubmed/1060807
Some species that aren’t even in the same genus can interbreed.
http://aob.oxfordjournals.org/content/74/2/111.full.pdf
Population researchers at Penn State University studied DNA samples from groups of African Americans throughout the US, West Africa, and Europe, to answer the question; How African are African Americans?
What they discovered contradicts some of the previous studies on the subject where it was thought that Blacks were about 30% white. They conclude that the average Black American is 17-18% white.
https://blackdemographics.com/geography/african-american-dna/?fbclid=IwAR0LVVZSdn7NQlbIeF5HFwfzfqLHLKdWFfPIC9MTNtMAKLkOSKIzxnpS3r8
This ~18% ancestry is the cause of multiple negative health effects due to genetic incompatibility.