Saltation is a sudden and large mutational change taking place over a single generation of a species and depends on a variety of factors related to the habitat and biology of the species. These factors differ in how they affect different species, meaning they should produce a random pattern of mutational change. Yet, careful paleontological study has shown that saltation occurs in a surprisingly consistent pattern, with many species changing at the same time.
Which of the following, if true, forms the best basis for at least a partial explanation of the patterned saltation revealed by the paleontological study?
Various factors affect mutation in single generation but pattern is many species undergo mutation at the same time. We need to find an option that helps support this even partially if not fully
A. In geologically recent times, for which paleontological study is impossible, human intervention has changed the pattern of saltation.
Irrelevant
B. In certain instances, saltation selectively affects organisms with certain unique, species-specific sets of characteristics.
We are not talking about certain mutations that affect specific characteristics but mutation as a whole not in particular species.
C. Some species experience saltation because of sudden changes in their food chain.
Some does not explain many. Again sudden change in food chain is not related to generational changes
D. Saltation is sometimes a result of wide-ranging environmental disturbances that affect many different species.
Correct, it explains why mutations are wide spread among different species at the same time.
E. Widely dispersed species are the least likely to experience saltation.
Irrelevant