Question Detail

BIO 201 Objective Question
Take CBT

Question

Which statement accurately describes the inheritance and medical relevance of the MN blood group system?
Options
A The LM and LN alleles are codominant, and naturally occurring antibodies against M or N antigens do not exist.
Correct Answer
B The LM allele acts with complete dominance over the recessive LN allele.
C MN blood group incompatibilities frequently cause severe hemolytic transfusion reactions.
D Individuals with the LMLN genotype express only the M antigen on their red blood cells.
Correct Answer

Option A is the correct answer.

Detailed Explanation

The LM and LN alleles show codominance, expressing both antigens equally; because naturally occurring antibodies are absent, it is primarily used in legal/paternity contexts rather than transfusion medicine.

Hint

No hint available

Question Info

Course: BIO 201
Type: Objective
Difficulty: Not specified
Question 5 of 285
Previous Course Details Next