I'm the only one in my family with an upward palpebral slant. No down syndrome & no known diseases or illnesses. My fathers side doesn't have it and my mother doesn't, unsure of her family because she is adopted. Is this a hidden gene from my mothers side that didn't show up in her? How would I find out what causes this? I've always been asked if I am Asian and no one else has my eyes in my family.
Genetic testing would be the way to get Answers. There are several other genetic conditions that can cause it too. Then there is always the chance this is just the way god made you. When I was in high school I dated a guy who's eyes were like oriental eyes and so were his moms and no one else in the family had anything like it. Then there was no genetics.
If your mother is adopted, there is no telling. It may be genetic and genetic testing would be the way to find out. It could very well be an ancestor who is Oriental/Asian and it just doesnt show up in your mom. Just like a one grandparent may have blue eyes and the other grandparent has brown and all their children have brown but a grandchild can pop up with blue eyes.
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