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Did the Israelites Really Cross the Red Sea? Stunning Evidence of the Location of Red Sea Crossing! Are we experiencing a Triumph of Orthodoxy? Judge Napolitano with Konstantin Malofeev (Moscow, Russia) "Trump Administration Cancels Most USAID Programs, Folds Others into State Department" Introducing Manus: The General AI Agent "Chinese Spies in Our Military? Straight to Jail" Any suggestion that the USA and NATO are "Helping" or have ever helped Ukraine needs to be shot down instantly Status: Not Logged In; Sign In United States News See other United States News Articles Title: Do kid's hair color change over time? Source: [None] URL Source: [None] Published: Nov 1, 2017 Author: me Post Date: 2017-11-01 11:44:31 by no gnu taxes Keywords: None Views: 182 Comments: 2 My daughter had very blond hair when she was a baby. Some people said she looked like Shirley Temple. Now her hair is dark brown, almost black. Post Comment   Private Reply   Ignore Thread   Top • Page Up • Full Thread • Page Down • Bottom/Latest #1. To: no gnu taxes (#0) I think that's not uncommon. I think eye color also changes not long after birth. Pinguinite  posted on  2017-11-01   11:48:35 ET  Reply   Trace   Private Reply   #2. To: no gnu taxes (#0) I'd think you could just google it. Some children start life as platinum blonds — often called "towheads" — but experience a darkening of hair color before they reach puberty. Just what causes this change in hue? To begin: Your hair color is determined by the amount of natural pigment, called melanin, you have in your hair. Two distinct types of melanin exist — eumelanin and pheomelanin — and the ratio of these pigments guides hair color. Eumelanin can be further broken up into two flavors: black and brown. Essentially, the more eumelanin you have in your hair, the darker it will be. Pheomelanin regulates the redness of your hair, similar to the way eumelanin controls the darkness of your hair. The more pheomelanin you have, the redder your hair will be, though the color may not be entirely visible if you also have a large amount of eumelanin as well. The exact concentrations of eumelanin and pheomelanin in your hair depend on which genes are turned on or off. Importantly, the expressions of the genes responsible for hair color are not constant throughout your life — these shifts in gene expression give rise to the changes in hair color that some kids experience. Typically, children with dark hair will keep their dark hair into adulthood. But some children with light hair, including towhead blonds, strawberry blonds, dishwater blonds and redheads, see their hair go dark brown by their 10th birthday. The reason for this change is because the amount of eumelanin in your hair increases as you mature, according to some research. But just why eumelanin production ramps up (or why those specific gene expressions change) is not entirely clear. Tooconservative  posted on  2017-11-01   12:08:37 ET  Reply   Trace   Private Reply   Top • Page Up • Full Thread • Page Down • Bottom/Latest

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