Yes, this is possible. The ABO blood types are determined by a single gene, and whether or not, someone is Rh- or Rh + is controlled independently by a different gene. Here is some more information:
We inherit 2 copies of our genes, one from our mother, and the other copy from our father. There are three different forms (called alleles) of the gene for blood type called A, B, and O. Blood type is determined by the combination of alleles inherited from our parents.
A person’s blood type is called their phenotype, and the different genetic combination of the forms of the gene is called a genotype. An example of a genotype would be OB. In this example, the person has two forms of the gene, O and B. This person’s blood type or phenotype would be type B blood. Another genotype for people with type B blood is BB.
Type A blood is another phenotype that can have the genotypes, AO or AA. In your example, if the mother’s genotype were AO, and the father had type B blood, then it would be possible to have a daughter with type B blood.
Whether blood is positive or negative is another phenotype. We all have 2 copies of the gene that determines if a blood type is positive or negative, and the following are genotypes: negative/negative; positive/negative, or positive/positive. Someone who is negative/negative has negative blood such as the father in your post. Someone who has positive blood can be either: positive/positive or positive/negative. The daughter in your example probably has the genoptype of positive/negative.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. Med Help International, Inc. is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.