In human genetics, hazel eyes are a recessive characteristic. Lighter eye colors are recessive to darker eye colors; this means that brown eyes are dominant over every other eye color.Know More
All humans inherits from their parents two alleles, or forms of genes, that govern eye color. The HERC2 gene has two alleles, brown and blue. The other genes for eye color, the gey and bey2 genes, work together to dictate the different shades. Each person's eye color depends on which two alleles they inherit.
The brown HERC2 allele is dominant overall, so anyone that inherits a brown HERC2 allele will have brown eyes, no matter what the other allele is. The combination of bey2 and gey make brown, green, hazel or blue eyes. These different alleles dictate how much melanin to make, and more melanin means darker eye color.Learn More
A dominant trait, or allele, is a trait in which only one gene copy is needed in order for it to be expressed. The terms dominant and recessive traits describe a simple inheritance pattern that reproductive organisms follow.Full Answer >
After green eyes, gray and silver eye color are among the rarer shades. The only eye colors more rare in humans are the honey-gold amber eye color and red eyes.Full Answer >
There is no way to precisely determine the color of a baby's eyes before it is born, but it is possible to predict the chances of a certain eye color by looking at the genetics of the parents and grandparents. Still, each parent only passes on one gene, and due to dominant and recessive traits, there are a number of different possible outcomes.Full Answer >
Brown eyes are generally dominant over blue eyes, but since a blue-eyed child can have brown-eyed parents, blue eyes are not a strictly recessive trait. Eye color inheritance is more complicated than simple dominant and recessive traits, according to The Tech Museum of Innovation.Full Answer >