Curious about genetic traits and compatibility? Welcome to Paternity Check, your go-to educational tool for exploring genetic inheritance patterns, blood compatibility, and trait predictions!

Using established genetic models, Paternity Check allows you to calculate biological possibilities and learn how genes are passed down from parents to children in a fun, accessible, and visual way.

🔑 KEY FEATURES:

🧬 ABO BLOOD GROUP PATERNITY ADVISOR
Check if a child's blood group is genetically compatible with the parents. Input the mother's, suspected father's, and child's ABO & Rh blood groups to see a detailed compatibility analysis based on Mendelian inheritance laws.

👁️ EYE COLOR & TRAITS PREDICTOR
Will your future child have blue, brown, or green eyes? Select the parents' eye colors to calculate the percentage probabilities of the child's eye traits. Explore additional genetic trait predictors like hair color, height, and other physical attributes.

🩸 BLOOD DONOR COMPATIBILITY MATCHER
Understand the science of blood transfusion. Use our clean compatibility matrix to quickly identify who can safely donate to or receive blood from whom (including universal donor O- and universal recipient AB+ guidelines).

📦 SECURE & PRIVATE
Your privacy is our priority. All standard blood group calculations run locally on your device. Shared results are only hosted securely if you explicitly choose to generate a sharing link for friends or family.

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⚠️ IMPORTANT ADVISORY & DISCLAIMER:
Paternity Check is an educational and informational tool based on Mendelian inheritance models.
• This app does NOT provide medical diagnoses, clinical advice, or legal proof of paternity.
• Blood group compatibility rules out certain mathematical combinations but cannot definitively prove paternity.
• The only way to conclusively establish legal or medical paternity is through a certified DNA paternity test conducted by a professional medical laboratory.
• Please consult a certified healthcare professional for any medical concerns or diagnostic genetic testing.