Microbiology True about polymorphism is: (PGI Dec 2006) A Single locus - multiple normal alleles B Single locus - multiple abnormal alleles C Single phenotype: single Iocus->multiple normal alleles multiple abnormal alleles D Single phenotype: Single !ocus->>multiple abnormal alleles. 💡 Explanation True about polymorphism is: (PGI Dec 2006) ✓ Correct Answer: D. Single phenotype: Single !ocus->>multiple abnormal alleles.