Final answer:
Two mutations with 0% recombination are likely to be linked, meaning they are located very close together on the same chromosome and inherited together without recombination.
Step-by-step explanation:
Two mutations that show 0% recombination in linkage experiments are likely to be D) Linked but with interference. This means that the genes are located so close to each other on the same chromosome that crossing over between them is very unlikely or does not occur.
Recombination frequency is a measure of genetic linkage and is determined by observing offspring proportions from genetic crosses. Sturtevant represented alleles on a linear map suggesting that when recombination frequency is 0%, the genes are perfectly linked, implying no recombination events occur between them. If recombination frequency is 50%, the genes behave as though they are unlinked, as Mendel's laws would predict.
Given that a recombination frequency of 0% indicates no crossing over and a 50% frequency would mean genes assort independently, two mutations that show 0% recombination demonstrate that these mutations are located so close together on the same chromosome that they are inherited together, exhibiting linkage without recombination, which can also be referred to as complete linkage.