Growing up I always wanted blue or green eyes. For whatever reason I thought my brown eyes were boring. After I realized my eye color wasn’t going to change I decided I wanted to have kids with light colored eyes. Then I met my husband, fell madly in love, and baby eye color no longer mattered to me. When our precious Izzy was born I just assumed her eyes would be brown. I honestly didn’t even really look at the color. I remember my sister holding Izzy in the delivery room and almost shouting “Her eyes are blue!” We were all pretty surprised.
If you go back to 7th grade biology and use the punnett square, there is a 25% chance our children will have blue or green eyes. Assuming that both me and my husband have heterogenous inheritance. His dad has green eyes and my mom has green eyes. Are you interested in predicting your baby’s eye color? I was most impressed with this advanced eye color calculator from The Tech Museum of Innovation.
The Science Behind Baby Eye Color
People have shared with me stories about their children being born with blue eyes and how quickly they changed to brown. Some babies are born with light colored eyes and as time passes they turn to brown. An article published in the Wall Street Journal discusses eye color and the chances of it changing. In the article, Dr. Schwab mentions that eye color pigment tends to settle by about a year of age and after this point eye color is fixed. Does that mean Izzy will keep her beautiful light colored eyes? Most likely.
Scientists are learning more and more about DNA and inheritance and it seems as if eye color is a little more complicated then the simple punnett square. There are numerous studies out there showing that eye color is more than just brown, green, or blue.
Want to read more about eye color inheritence? Here are a few articles I found interesting:
- Digital Quantification of Human Eye Color Highlights Genetic Association of Three New Loci
- Blue Eyes Are Increasingly Rare in America
- What Color Eyes Will Your Children Have?