A genetic marker is a gene or DNA sequence with a renowned position on a chromosome that can be utilised to recognise individuals or species. It can be described as a variety (which may originate due to mutation or alteration in the genomic loci) that can be discerned. A genetic marker may be a short DNA sequence, such as a sequence surrounding a lone base-pair change (lone nucleotide polymorphism, SNP) or a long one, like minisatellites. Genetic markers can be used to study the connection between an inherited disease and its genetic causes (for demonstration, a specific mutation of a gene that outcomes in a defective protein). It is known that parts of DNA that lie near each other on a chromosome are inclined to be inherited together.
Original Article: Biochemistry & Molecular Biology Letters
Original Article: Biochemistry & Molecular Biology Letters