Practice question

Simple sequence repeats exhibit exceptional polymorphism due to high mutation rates caused by slipped-strand mispairing during DNA replication. Variable repeat numbers generate many alleles per locus, often exceeding ten in diverse germplasm, providing high polymorphic information content and heterozygosity values. Their codominant, multiallelic nature surpasses biallelic SNPs, low polymorphism RFLPs and dominant RAPD markers that detect fewer loci. Widespread genomic distribution, excellent reproducibility and ease of PCR detection further enhance utility for linkage mapping, population structure and fingerprinting studies in crop plants.