5 doctors weighed in:

Can a female with o blood type and a male with ab blood type have a baby with o blood type? Can a female with o blood type and a male with ab blood type have a baby with o blood type?

5 doctors weighed in
Dr. Richard Pollard
Anesthesiology
1 doctor agrees

In brief: No

With this combination the child would either be type a or type b.
You may want to check the blood types of the parents.

In brief: No

With this combination the child would either be type a or type b.
You may want to check the blood types of the parents.
Dr. Richard Pollard
Dr. Richard Pollard
Thank
Dr. Jack Mutnick
Internal Medicine - Allergy & Immunology

In brief: No

The child will only be a or b http://www.
Biology.Arizona.Edu/human_bio/problem_sets/blood_types/btcalca_popup.Html.

In brief: No

The child will only be a or b http://www.
Biology.Arizona.Edu/human_bio/problem_sets/blood_types/btcalca_popup.Html.
Dr. Jack Mutnick
Dr. Jack Mutnick
Thank
Dr. Laura McMullen
Pediatrics

In brief: No.

No.
If one parent is o and the other parent is ab, then the children will be either a or b, but not ab or o. Legal disclaimer: I am providing this general and basic information as a public service and my response to this question does not constitute a doctor-patient relationship. For any additional information, advice, or specific concerns, please speak with your own physician. The information provided is current as of the date of the answer entry.

In brief: No.

No.
If one parent is o and the other parent is ab, then the children will be either a or b, but not ab or o. Legal disclaimer: I am providing this general and basic information as a public service and my response to this question does not constitute a doctor-patient relationship. For any additional information, advice, or specific concerns, please speak with your own physician. The information provided is current as of the date of the answer entry.
Dr. Laura McMullen
Dr. Laura McMullen
Thank
2 comments
Dr. Juan Merayo-Rodriguez
The answer could still be yes if father is cis-AB. See more details here: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1686052/
Dr. Juan Merayo-Rodriguez
The cis-AB phenotype can raise questions about an apparently paradoxical inheritance of the ABO blood group, such as the birth of an O child from an AB mother. The blood bank can be of assistance to a clinician faced with a patient with what appears to be a genetically impossible ABO blood group. For more details read http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1686052/ also: http://www.sciencedirect.com/science/article/pii/S0887796306000137
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