Practice question

Simple sequence repeats represent tandem repeats of one to six base pair motifs dispersed throughout eukaryotic genomes. They exhibit codominance, allowing clear distinction between homozygous and heterozygous states based on fragment length polymorphism. Each allele is amplified with locus-specific primers flanking the repeat, producing different sized products. In contrast, RAPD, AFLP and ISSR behave as dominant systems scoring only presence or absence of bands. High reproducibility, multiallelism and Mendelian inheritance make SSR ideal for mapping, diversity analysis and marker-assisted selection in breeding programs.