Two Organisms Are Very Similar Both in Terms of Molecular

Multiple Choice

Two organisms are very similar both in terms of molecular and physical characteristics. However, there is at least one characteristic that is not shared by these organisms-each organism has at least one evolutionary novelty that is not present in the other organism and thus these organisms do not interbreed. As a result, what is likely the lowest taxonomic classification that is shared by these organisms?

A) species
B) genus
C) family
D) order