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The main risk of marrying someone with an “incompatible genotype” is having children with “sickle cell disease (SCD)” usually genotype “SS”
Key Incompatible Pairs & Risks
- **AS + AS** (both carriers):
→ 25% chance per child of **SS** (sickle cell anemia)
→ 50% chance of **AS** (carrier, usually healthy)
→ 25% chance of **AA** (normal)
- **AS + SS**:
→ 50% chance of **SS** (sickler)
→ 50% chance of **AS** (carrier)
- **SS + SS**:
→ 100% chance every child will be **SS** (sickle cell disease)
- Other risky combos (e.g., AS + SC, SC + SC) can also produce children with SCD or related conditions like SC disease.
What SCD Means for a Child
- Chronic pain crises
- Frequent infections & hospitalizations
- Anemia, organ damage, stroke risk
- Reduced life expectancy (though better with modern care)
- High medical/emotional/financial burden on family
Genotype check before marriage is very important. Love is beautiful, but healthy children matter too. Get tested early.
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