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
Chromosome of RH gene is located in 
Select and explain. 
A. Ch1, B. Ch 3, C. Ch 6, D. Ch 9
A: Ch1
Answer: A: Ch1 
Explanation: The Rh blood group antigens derive from 2 genes,RHD and RHCE, thatare located at chromosomal position 1p34.1-1p36 (chromosome 1, sho arm, region 3, band 4, subband 1, through band 6). In whites, a cde haplotype with a deletion of the whole RHDgene occurs with a frequency of approximately 40%. Refer robbins