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How can a child have blue eyes when both parents have dark brown eyes?

1 doctor weighed in
Dr. James Ferguson
Pediatrics

In brief: Brown dominant

Two brown eyed parents that produce a blue eyed child are both carriers of the blue eye recessive gene.
Brown dominates. They both have bb for eye color. This means a 1/4 chance for blue, a 50% chance for bb carrier brown, a 25% chance for full bb brown.

In brief: Brown dominant

Two brown eyed parents that produce a blue eyed child are both carriers of the blue eye recessive gene.
Brown dominates. They both have bb for eye color. This means a 1/4 chance for blue, a 50% chance for bb carrier brown, a 25% chance for full bb brown.
Dr. James Ferguson
Dr. James Ferguson
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