The Sccientific Meaning Of Eye Color

The Science BEHIND EYE COLOR A person's eyes can sometimes reveal more than words ever can Basics of EYE COLOR Our eye color depends on the amount of melanin found in our irises MELANIN LEVELS LOWER melanin levels lead to HIGHER melanin levels lead to a lighter eye color a darker eye color Scientists have confirmed that multiple genes determine eye color–not just a single gene! Melanin Levels Are Influenced by TWO MAIN GENES P protein OCA2 Gene Produces the P protein that determines the amount of melanin present in the iris HERC2 Gene This gene could limit the OCA2 gene, leading to less melanin in the iris and a lighter eye color Less P protein would lead to blue eyes instead of brown eyes P protein P P P PP What causes a baby's eye color to change? It's all about the melanocytes that form the brown pigment melanin Melanocyte activity levels may cause a baby's eye color to change until around their 1st birthday If melanocytes secrete only a small amount of melanin, a baby will have blue eyes If they secrete a little more, a baby will have eyes that look green or hazel If melanocytes become very active, a baby will have a brown shade of eyes Most American Caucasian babies begin life with blue eyes.. .But only 1 in 6 retain blue eyes as adults Babies of African American, Hispanic, and Asian descent are more likely to begin life with darker eyes Famous EYE ANOMALIES Mila Kunis & Kiefer Sutherland Both have Heterochromia Iridium, a condition where each eye is a different color Mila Kunis's right eye is green and left eye is hazel Kiefer Sutherland has eyes of two different shades of blue Elizabeth Berkley The popular Saved By The Bell star has Heterochromia Iridis, a condition where one eye features multiple colors Approximately 6 in 1,000 are believed to have this type of condition Berkley has one eye that's half brown and half green, the other is entirely green David Bowie David Bowie's iconic eye condition was often mistaken for Heterochromia His condition was anisocoria (permanently dilated pupil) caused by eye damage sustained as a teen during a fight over a girl Eye Color May Influence Our PERCEPTIONS OF OTHERS Perceived Trustworthiness According to a study published in PLOS ONE One study showed people generally rate brown-eyed people as being more trustworthy than blue-eyed people Athletic SuccesS According to a University of Louisville study Light-eyed individuals and animals perform better than their dark-eyed counterparts at slow activities that involve breaks BOWLING or GOLF Dark-eyed individuals may be better at activities that involve speed and reactivity BOXING or TENNIS Соmpetitiveness According to a study published in Current Biology One study found that those with lighter eyes tend to be more competitive than those with darker eyes Sympathy According to a study published in Current Biology Those with darker eyes have been found to be more sympathetic than their lighter eyed peers What does your eye color say about you? Sources FRAMESDIRECT.COM aapos.org/terms/conditions/26 ghr.nlm.nih.gov/primer/traits/eyecolor medicinenet.com/heterochromia_iridis/page2.htm biography.com/people/elizabeth-berkley-21341897 webmd.com/parenting/baby/video/babies-blue-eyes theguardian.com/film/2006/jul/30/features.magazine insideupmc.upmc.com/can-eye-color-predict-pain-tolerance scientificamerican.com/article/how-does-someone-get-two rarediseases.info.nih.gov/diseases/8590/heterochromia-iridis science.marshall.edu/murraye/Understanding%20Eye%20Color.ppt hudsonalpha.org/wp-content/uploads/2014/04/genetics_of_eye_color.pdf healthychildren.org/English/ages-stages/baby/Pages/Newborn-Eye-Color.aspx mosthappy.com/article/1262562/14-celebrities-with-two-different-colored-eyes foxnews.com/story/2007/08/21/study-blue-eyed-people-smarter-than-brown-eyed.html goodhousekeeping.com/beauty/g2844/celebrities-with-heterochromia-different-colored-eyes spring.org.uk/2016/01/this-eye-colour-linked-to-being-more-competitive-egocentric-and-skeptical.php pregnancymagazine.com/pregnancy/pregnancy-health/is-it-true-that-all-babies-are-born-with-blue-eyes blogs.scientificamerican.com/science-sushi/brown-eyes-deemed-more-trustworthy-but-thats-not-the-whole-story premi um е у е w е a r DEVELOPED BY N NOWSOURCING ------ ------