A woman has B blood type of the ABO system. Her mother is type O. From this, we

Question

A woman has B blood type of the ABO system. Her mother is type O. From this, we can infer that her father could not have O blood type. has AB blood type. could not have B blood type. could be any blood type. has B blood type.

Consider the case of X-linked inheritance of a recessive mutant allele. Among progeny from a cross of a male with a normal allele and a heterozygous female carrier, all female offspring who receive the recessive mutant X would show the trait. all female offspring would be carriers. all female offspring who receive the recessive mutant X chromosome would show the trait. roughly half of the male offspring would show the trait. all male offspring of would show the trait.

Explanation / Answer

ABO blood types can be complicated to understand. This is mostly due to the fact that the 'O-type' antigen is masked by the presence of an A- or B-type antigen. This is explained in the following chart, showing the different the genotypes that make up the blood types.

For example, two O blood type parents can produce a child with only O blood type. Two parents with A blood type can produce a child with either A or O blood types. Two parents with B blood type can produce a child with either B or O blood type. One parent with A and another with B can produce a child with A, B, AB or O blood types. If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types.

Rh Positive (Rh+) and Negative (Rh-) Blood Types

The Rh (+/-) factor is inherited separately from the ABO blood types. Similarly to the masking effect of the O gene in ABO blood types, the Rh negative (Rh-) gene is also masked by the presence of a Rh positive (Rh+) genotype. Therefore, a person may have a Rh + blood type and can still have an Rh - gene (See the chart below). Furthermore, 2 parents with Rh + blood types can have a child with Rh - blood type.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.