DNA-sequence genetic loci {polymorphic locus} can have sequence variations {polymorphism, DNA}| {polymorphic variation}. For example, genes can have different alleles. Repeated sequences can have different numbers of repeats.
Sequence positions can have different nucleotides {single nucleotide polymorphism} {single-nucleotide polymorphism} (SNP). At genetic loci, alleles can differ by one nucleotide.
Restriction endonucleases cut at different positions for different alleles at polymorphic loci, causing variations in DNA-fragment lengths {Restriction Fragment Length Polymorphism} (RFLP) (FLP). Cutting or non-cutting at restriction-endonuclease sites makes two short DNA fragments or one long DNA fragment.
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0225