This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
When one gene is inherited from one parent only, it is known as 
Select and explain. 
A. Genomic imprinting, B. Mosaicism, C. Alleles, D. Chimerism
A: Genomic imprinting
Answer: A: Genomic imprinting 
Explanation: These genes are called 'imprinted' because one copy of the gene was epigenetically marked or imprinted in either the egg or the sperm