This predicts that cross-breeding will lead to offspring that are genetically fitter than their parents.It is possible that humans are also subject to this process, so the mixing of diverse genetic background leads to greater genetic fitness 'which tends to be linked to attractiveness', said Dr Lewis.'There is evidence, albeit anecdotal, that the impact of heterosis goes beyond just attractiveness.Meeting others that have similar interests is an ideal way to find things to do once you are dating.
The British regard people of mixed race as the most attractive and successful, say psychologists.
X Factor star Dr Lewis said 'Previous, small scale, studies have suggested that people of mixed race are perceived as being more attractive than non-mixed-race people.
This study was an attempt to put this to the wider test.
This is a much greater proportion than would be expected based on their representation in British society of around three per cent, said Dr Lewis.
is one quarter Chinese, one quarter Thai, one quarter African American, one eighth Native American, and one eighth Dutch.
But there could also be a Darwinian explanation, with cross-breeding between diverse genetic backgrounds naturally leading to more genetically 'fit' people who tend to be more attractive.