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Estilo Todas las personas de ojos azules del planeta son descendientes de una misma persona ¿Alguna vez te has preguntado por qué tus ojos son de ese color?, pues no te lo preguntes más
Los beneficios de dejar el alcohol Atención, personas de ojos azules.
¿Alguna vez te has preguntado por qué tus ojos son de ese color? Pues no te lo preguntes más.
Según los científicos, todas las personas de ojos azules descienden de un único europeo que vivió hace entre 6.000 y 10.000 años.
¿Cómo lo descifraron? En principio, todos los humanos tenían ojos marrones en varias tonalidades hasta que hubo una mutación específica que provocó el cambio.
La mutación ocurrió en un gen llamado HERC2 y desactiva el OCA2, el gen que determina la cantidad de pigmento marrón que producimos.
Por eso los ojos se vuelven azules.
En cuanto a que descienden de la misma persona, la evidencia de ello es que todas las personas de ojos azules que viven hoy en día tienen esta misma mutación.
Los científicos calculan que solo entre el 8 y el 10 por ciento de la población tiene ojos azules y que los ojos no se desarrollan completamente en la infancia, lo que significa que el pigmento marrón puede aparecer más tarde, causando que los niños de ojos azules acaben teniendo ojos marrones en la edad adulta.
Así que si tienes los ojos azules, ya lo sabes: tu familia es mucho más grande de lo que te imaginabas.
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