MICROANATOMY

BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS

BLOOD

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Could a man with type B blood and a woman with type AB produce a child with type O blood?
A
No
B
Yes but only if he is heterozygous
C
Yes but only if he is homozygous dominant
D
Yes
Explanation: 

Detailed explanation-1: -Usually, an AB parent and an A parent can only have children who are Type A or Type B. One exception is in certain Asian groups. Some of these folks have a rare version of the ABO blood type gene called cis-AB. People with this gene version have an AB blood type but can easily have an O child.

Detailed explanation-2: -The children of a man with type B blood and a woman with type AB blood could be type A, type B, and type AB, but not type O.

Detailed explanation-3: -In cases of questioned paternity, ABO blood-typing can be used to exclude a man from being a child’s father. For example, a man who has type AB blood could not father a child with type O blood, because he would pass on either the A or the B allele to all of his offspring.

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