The offspring of two sets of identical twins are legally cousins but genetically siblings.
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One in 500 humans has one blue eye and one brown eye.
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The world's youngest parents were 8 and 9 and lived in China in 1910.
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Approximately 4 to 5% of the U.S. population has one or more clinically significant phobias in a given year. Specific phobias occur in people of all ages. The average age of onset for social phobia is between 15 and 20 years of age, although it can often begin in childhood.
30
All babies are color blind when they are born.
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Only 2% of the worlds population is blonde.
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People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
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