Genetics Health Center

The modern science of genetics had its start in 1866 when an Austrian monk named Gregor Mendel provided a simple yet powerful description of how traits are passed on from one generation to another. Thanks to Mendel, when we think of our children, we can see them as a mixture of their two parents, with traits from both sides becoming more evident as they grow.

Dr. Greene’s Genetics Topic Center provides information on blood types, the Rh system, figuring paternity, and the how’s and why’s of genetic disorders.

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Are they really my parents?

If both of my parents have O positive blood, is it possible for me to have O negative blood? I have been told that it is not possible, that one parent would have to have the negative factor. I have been researching this question for some time with no good answer. I would really appreciate your help in answering this.
Debbie Howlett – Farmington, New Mexico

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