If they keep breeding amongst themselves then they eventually inbreed into genetic waste. Isnt that obvious considering the negatives of inbreeding?
"Interracial Couples May Make Taller, Smarter Children Due To Greater Genetic Diversity: Study"
"Greater genetic diversity is linked to an increase in height and enhanced cognitive function, a new study finds. The research, involving more than 350,000 people worldwide, also revealed information about the apparent lack of a genetic link related to certain health problems."
"Mixed-race relationships are making us taller and smarter: Children born to genetically diverse parents are more intelligent than their ancestors"
"Shriver's work has uncovered something else that is very interesting. He finds that mixed-race people are more symmetrical than the rest of us, and being more symmetrical translates into being more attractive, having less infection, being less stressed, and having greater genetic diversity."
Diverse parental genes lead to taller, smarter children, finds extensive study
The children of parents who are more distantly related tend to be taller and smarter than their peers, according to one of the largest studies to date into genetic diversity.
BBC: Is It Better To Be Mixed Race? YES
"Farmers have known and used hybridization in plants and animals for centuries in order to produce improved and stronger plants. The resulting hybrids are often more resistant to environmental factors and diseases. Could this be the case in mixed-race individuals as well? Dr Aarathi Prasad investigates in this programme if there are advantages to have parents from two different races."
"In 2006, author Alon Ziv published the first edition of Breeding Between the Lines, a haphazard exploration of the idea that mixed-race people are inherently "healthier and more attractive" than people of non-mixed backgrounds."
"People born to genetically-diverse parents likely to be taller and more intelligent, says study
Scientists found that height and general intelligence appear to be increasing as a result of the mixing of DNA"
"In 2006, author Alon Ziv published the first edition of Breeding Between the Lines, a haphazard exploration of the idea that mixed-race people are inherently "healthier and more attractive" than people of non-mixed backgrounds.
"The biology of race is a sensitive topic with an ugly history, but Breeding Between the Lines approaches it responsibly," the book's website reads. "Ziv presents evidence from academic journals, world history, census counts, and pop culture to explain why interracial individuals have measurable physical and mental advantages."
"So are these differences significant and, more to the point, are they significant enough so that when they are brought together, there might be tangible benefits for people who are mixed-race? The answer from some scientists who still do what could be called "racial science" appears to be yes on both counts."
The answer from some scientists who still do what could be called "racial science" appears to be yes on both counts. "
"Study: Men and women view mixed-race male faces as more attractive than White faces"
"A new study in The Journal of General Psychology has found evidence that faces of mixed racial phenotypes are perceived as more attractive than stereotypically White and Black faces."