Markers That Have Been Mapped Both Physically and Genetically on a Chromosome

Question

Markers that have been mapped both physically and genetically on a chromosome are known as:
A) Anchor markers
B) Attachment markers
C) Hybridized markers
D) Anchor markers and Attachment markers
E) All of these

Accepted Answer

Markers that have been both physically and genetically mapped on a chromosome are known as anchor markers. They serve as reference points for locating and mapping other genes or DNA sequences on the chromosome. "Attachment markers" and "hybridized markers" are not commonly used terms in genetics, so they are not correct choices. Option D is incorrect as the correct term is "anchor markers" only. Therefore, the best choice is A: Anchor markers.