1. Dominant vs. recessive phenotype

This is a picture of my brown eyes and my dad's blue eyes. Our eyes represent dominant and recessive phenotypes. Brown eyes are a dominant gene which means they will always be expressed. Blue eyes are recessive which means that they will only show up when both parents have the gene. My dad's parents both carried the blue eye gene and passed it down to him. My mom's brown eyed gene masked my dad's blue eyed gene when passing their genes down to me and my sisters.

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