It is not a substitute for personal medical advice from a medical professional.

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“There has been speculation ever since Charles Darwin that genetic diversity would be beneficial in terms of evolutionary fitness.

We think genetic diversity decreases the chances of inheriting defecting copies of the same gene from both father and mother,” said Peter Joshi, first author of the study, reported.

A note of Caution: Do not assume that just because a person is from a certain culture or ethnic background that the person fits the stereotype of all people from that ethnicity.

There is a great deal of diversity within a culture.

The findings revealed four traits — height, lung capacity, general cognitive ability, and educational attainment — have increased significantly in correlation with genomes that possessed more genetic diversity.

The genomes of the individuals included those living as far as Finland and East Asia.

Some people may "look" ethnic but, may not identify with that ethnic group.

(Just because you have a friend who is similar in culture to you partner, do not assume you know everything about his/her culture.

Below is a list she calls "trouble spots" in such marriages.