Practice question

Dominant markers are scored based on the amplification or presence of a single allele in the reaction, producing a binary data matrix. Heterozygous individuals carrying one copy of the amplifiable allele cannot be distinguished from homozygous individuals carrying two copies, as both show a band. Absence indicates null homozygous genotype only. This inability to reveal allelic dosage limits estimation of allele frequencies and heterozygosity. Codominant markers like SSR and RFLP reveal both alleles separately, while dominant systems prioritize ease of use over genotypic resolution.