Question

Why was molecular testing necessary to establish that species Z was closely related to Butanol Cyrus? In other words, why couldn't we just stop after the fırst three tests?

Answer 1

It is likely that the genomic sequences that were used did not enable to properly observe the evolutionary relationships among the species analyzed

Step-by-step explanation:

The homology level between the genomic sequences may be too low to separate species that are phylogenetically related. In these cases, it is necessary to make a genetic analysis of the sequences that are used before the phylogenetic analysis