This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
What is the chance of an offspring being affected with an affected mother and normal father, in an X-linked recessive condition? 
Select and explain. 
A. 50% of daughters are carriers, B. 50% of sons are asymptomatic carriers, C. 50% of the off springs are carriers, D. Males will never be affected
A: 50% of daughters are carriers
Answer: A: 50% of daughters are carriers 
Explanation: Robbins basic pathology 9th edition page no 220 Here since it is an x linked recessive condition and mother is a carrier her one x is abnormal of the two x chromosome she have. And since father is unaffected he has normal x chromosome. Hence ther is a 50% chance for affected x chromosome to pass from mother to daughter. Hence 50% of the daughters will become carriers.