According to the information found in the search results, the mother has type O blood and the father has type B blood. Each parent has two copies of the gene that determines the ABO part of blood type, and each copy can be a different version of the gene (A, B, or O). The possible blood types of their offspring can be determined by looking at the combinations of the genes that the parents can pass down to their child. Based on this information, the possible blood types of their offspring are:
- 50% chance of type B blood (if the father passes down the B gene and the mother passes down the O gene)
- 50% chance of type O blood (if the father passes down the B gene and the mother passes down the O gene)
Therefore, the possible blood types of the offspring are B or O.
