Can O positive and an A make negative baby?

It's impossible to say for certain whether an O positive and an A negative parent could have a baby with a specific blood type without knowing the other parent's Rh factor. Here's why:

Understanding Blood Types:

* Blood Type (A, B, AB, O): Determined by genes inherited from both parents. Each parent contributes one gene.

* Rh Factor (Positive or Negative): Another inherited factor. A person can be Rh positive (Rh+) or Rh negative (Rh-).

Possible Scenarios:

* Parent 1: O Positive (OO+)

* Parent 2: A Negative (AA- or AO-)

Possible Baby Blood Types:

* If Parent 2 is AA-:

* Blood Type: A or O

* Rh Factor: Could be positive or negative, depending on the Rh genes inherited.

* If Parent 2 is AO-:

* Blood Type: A, O, or AB (if Parent 1 is secretly carrying a B gene)

* Rh Factor: Could be positive or negative, depending on the Rh genes inherited.

Important Notes:

* Rh Factor Compatibility: The Rh factor is crucial for pregnancy. If a mother is Rh-negative and the baby is Rh-positive, complications can arise.

* Genetic Testing: Blood type and Rh factor can be determined through a simple blood test.

* Consult a Healthcare Professional: For accurate information and personalized guidance, always consult with a doctor or genetic counselor.

In conclusion: An O positive and an A negative parent could have a baby with different blood types and Rh factors depending on the specific genetic combinations. It's essential to consider both parents' full blood types and Rh factors for accurate predictions.

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