My friend asked me that her blood type is type A and her father’s blood type is type B. Is this possible from a genetic perspective?
Ever since she was a child, people around her have often half-jokingly said that she was an adopted child. Although she does not have blond hair and clear blue eyes, she does look very different from her parents and siblings.
Blood type is an important clue to parentage, and the Red Cross has an app that can estimate a child's likely blood type from a parent's blood type. A computer calculation revealed that her mother's blood type could only be type A or AB. But my friend’s mother never disclosed her blood type. So how can the mystery of life experience be solved?
There are methods for paternity DNA testing, and it is not difficult to find out whether the parents in front of you are the biological father or mother. My friend has grown up and may choose not to delve into the truth in the end.
After practicing medicine for a while, even if my doctor friends discover that the blood type of a patient's child is suspicious, they may not choose to tell the people involved unless necessary. The mother should know who the child's father is, but the "father" may not know that the child's biological father is someone else. The truth is often cruel and can destroy a home.
Some people involved may also choose to get to the bottom of things. In ancient times, blood was used to identify relatives. Today, in addition to using blood type methods for simple evaluations, we also have DNA identification methods.
▲ Radiology Specialist Dr. Shum Sing Fai, John
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