genetic marker. 1  a phenotypic character that can be assigned to a GENE to mark its position on the GENOME.  a characteristic feature of the GENOTYPE, such as a NUCLEOTIDE signature, gene or HETEROCHROMATIC region, that can be used to track a particular individual, TISSUE, CELL, NUCLEUS, CHROMOSOME, PLASMID or gene.
The town of Rohan is located in the department of Morbihan of the french region Bretagne. The town of Rohan is located in the township of Rohan part of the district of Pontivy. The area code for Rohan is 56198 (also known as code INSEE), and the Rohan zip code is 56580.
The place Brereton (it has also been spelt as Bretone, Bretune and Brierton) is in Cheshire, part of the lands given by William the Conquerer to Hugh the Fat, who became Earl Hugh of Chester, in return for services rendered at Senlac (the battle of Hastings).arpenter, Miller, Baker; or a name which records the type of person, e.g. Smart, Pretty, Small; and then there are the names which decribe locality. The name Brereton means place of the brier (rose) or a place covered with briers. Place means ton, and so we have Brier-ton .