October 08, 2018
My, what blue eyes you have—and now we know why
The answer isn’t colored contacts. It’s chromosomes. Technically, a duplicated stretch of DNA on a single chromosome: Canine chromosome 18. That’s the conclusion drawn in a new study led by Adam Boyko, PhD, Aaron Sams, PhD. How did they get their data? They crowd-sourced it through direct-to-consumer DNA testing.