My partner and i have a 9mo, so i know his eye colour could still change. him and i have hazel, our son had blue, and only one grandparent has blue eyes. what’s the likelihood of different eye colours for him?
thank you!
In: 28
Eye genetics is more complex than the simple “brown is dominant over blue” thing you hear repeated all the time in textbooks (and this thread). You can, for example, sometimes get brown eyes even when both parents have blue eyes. There are two main genes OCA2 and HERC2, with several different alleles available for both genes, plus a whole string of other genes that have smaller effects. And eye color of course isn’t limited to “blue” and “brown” but has a variety of greens and hazels, and occasionally other colors.
And, as you note, eye color tends to darken with age as melanin production comes online.
So basically there’s no clear way to answer this for precisely.
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