1 Usually, staph bacteria donât cause any harm. 2  However,if they get inside the body they can cause an infection. 3  When common antibiotics donât kill the staph bacteria, it means the bacteria have become resistant to those antibiotics. 4  This type of staph is called MRSA (Methicillin-Resistant Staphylococcus aureus).
A genetic marker is defined as a specific gene or DNA sequence that produces a detectable trait with a known location on a chromosome and that can be used to study family and population, identification of cells, species or individual. Introduction:
In general, geneticists use random primers in their search for DNA markers, but that process is often long and arbitrary, and it can result in researchers spending a lot of time and money to identify just one DNA marker. A PCR-based DNA marker for detection of mutant and normal alleles of thr Wx-D1 gene of wheat. Identification of a null allele at the Wx-B1 locus in some of Iranian bread wheat genotypes. Identification of a closely linked DNA marker, DXS 178, to further refine the X-linked agammaglobulinemia locus.