Eye Color Calculator
Discover the potential eye color of your future child with our advanced genetic prediction tool. Simply input the eye colors of both parents and let our calculator do the rest!
Understanding Eye Color Inheritance
Eye color is a fascinating aspect of human genetics, determined by multiple genes that interact in complex ways. The primary gene responsible for eye color is OCA2, which produces the P protein involved in melanin production. However, other genes like HERC2, SLC24A4, and TYR also play significant roles in determining eye color.
The Science Behind Eye Color
Eye color is determined by the amount and type of pigments in the iris. The two main types of pigments are eumelanin (brown and black) and pheomelanin (red and yellow). The combination and concentration of these pigments result in the wide range of eye colors we see, from light blue to dark brown.
Genetic Inheritance Patterns
Eye color inheritance doesn't follow simple Mendelian genetics. It's a polygenic trait, meaning multiple genes contribute to the final outcome. This complexity explains why two blue-eyed parents can sometimes have a brown-eyed child, or why eye color can change slightly as a child grows.
Factors Influencing Eye Color
While genetics play the primary role in determining eye color, other factors can influence the final shade:
- Age: Some babies are born with blue eyes that darken over time
- Lighting conditions: Eye color can appear to change based on lighting
- Emotions: Pupil size changes can affect perceived eye color
- Medical conditions: Some conditions can affect eye pigmentation
The Rarity of Eye Colors
Brown is the most common eye color worldwide, with an estimated 55-79% of people having brown eyes. Blue eyes are much rarer, occurring in only 8-10% of the world's population. Green eyes are the rarest, with only 2% of people worldwide having this eye color.
Frequently Asked Questions
Can two blue-eyed parents have a brown-eyed child?
While rare, it is possible due to the complex nature of eye color genetics and potential genetic variations.
Do eye colors change over time?
Yes, especially in infants. Many babies are born with blue eyes that may darken or change color in their first few years.
What causes heterochromia (different colored eyes)?
Heterochromia can be caused by genetic mutations, injuries, or certain medical conditions affecting melanin production.
Are green eyes really the rarest?
Yes, green eyes are considered the rarest, occurring in only about 2% of the world's population.
Can eye color be artificially changed?
While colored contact lenses can temporarily change eye appearance, permanent changes to eye color are not currently possible or safe.
Is eye color linked to vision quality?
Generally, eye color doesn't affect vision quality. However, people with lighter eyes may be more sensitive to light.