Can blue eyes be passed down?
The laws of genetics state that eye color is inherited as follows: If both parents have blue eyes, the children will have blue eyes. The brown eye form of the eye color gene (or allele) is dominant, whereas the blue eye allele is recessive.
Can 2 blue eyed parents have a brown eyed child?
Eye color is not an example of a simple genetic trait, and blue eyes are not determined by a recessive allele at one gene. Instead, eye color is determined by variation at several different genes and the interactions between them, and this makes it possible for two blue-eyed parents to have brown-eyed children.
What nationality has green eyes?
Where Do Green Eyes Come From? Green-eyed people most commonly originate from northern and central parts of Europe, as well as some parts of Western Asia. For example, Ireland and Scotland both boast a whopping 86 percent of the population having blue or green eyes.
Are blue eyes a birth defect?
Scientists have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today.
Can blue eyes turn green?
Blue eyes have a low level of pigment present in the iris. … And they may appear to “change color” from gray to blue to green depending on clothing, lighting, and mood (which may change the size of the pupil, compressing the colors of the iris).
Do purple eyes exist?
Violet is an actual but rare eye color that is a form of blue eyes. It requires a very specific type of structure to the iris to produce the type of light scattering of melanin pigment to create the violet appearance.