What is the genetic mutation "Originally, we all had brown eyes," said Professor Hans Eiberg from the Department of Cellular and Molecular Medicine. "But a genetic mutation affecting the OCA2 gene in our chromosomes resulted in the creation of a "switch," which literally "turned off" the ability to produce brown eyes." The OCA2 gene codes for the so-called P protein, which is involved in the production of melanin, the pigment that gives colour to our hair, eyes and skin. The "switch," which is located in the gene adjacent to OCA2 does not, however, turn off the gene entirely, but rather limits its action to reducing the production of melanin in the iris -- effectively "diluting" brown eyes to blue. The switch's effect on OCA2 is very specific therefore. If the OCA2 gene had been completely destroyed or turned off, human beings would be without melanin in their hair, eyes or skin colour -- a condition known as albinism...
coming home from pickin' em up from daycare, and blaring Ozzy Ozborne Cracy Train in the car. likely they got good music all day while they were there. But then serious, at age 5, Beth's ears, she was under water! tubes and everything else. One of the best doctors we ever saw, he insisted she wake up in my arms. Iowa City.
ReplyDeletewhat was their age when you were blaring Me and Julio in the car. About 12. you were brain washing them, Sheri. ha.
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