This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
When a functional gene is inherited from one parent only, the condition is known as - 
Select and explain. 
A. Genomic imprinting, B. Mosaicism, C. Alleles, D. Chimerism
A: Genomic imprinting
Answer: A: Genomic imprinting 
Explanation: The expression of disease depending on whether the functional gene is inherited from the male or female parent (one parent only) is termed as genomic imprinting.