O pos and b parents have a neg child?

You're asking about blood types and inheritance.

Here's how it works:

* Blood types are determined by genes. You inherit one gene from your mother and one from your father.

* There are three possible alleles: A, B, and O.

* A and B are dominant. If you have either an A or B allele, you'll express that blood type.

* O is recessive. You'll only express the O blood type if you inherit two O alleles.

Here's the scenario you described:

* Parent 1: O positive (OO positive)

* Parent 2: B positive (BO or BB positive)

Possible child blood types:

* B positive (BO)

* O positive (OO)

Important Note: The Rh factor (positive or negative) is determined by a separate gene.

It's impossible for two parents with positive Rh factors to have a child with a negative Rh factor. This is because the positive Rh factor is dominant.

To have a child with a negative Rh factor, one parent would need to be Rh negative.

Let me know if you'd like more information on blood type inheritance!

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