The statement is True. Genetic markers that exhibit a recombination frequency of 0 indicate that they are completely linked, meaning they are inherited together without exception. This phenomenon occurs because such markers are located very close to each other on the same chromosome.
In genetics, recombination frequency is a measure of how often two genes on the same chromosome are separated during meiosis. A frequency of 0 means that the genes are so close together that they are almost never separated by recombination events. Therefore, if two genetic markers are completely linked with a recombination frequency of 0, they must be on the same chromosome, as recombination events could not occur between them.