Final answer:
The researchers in the article were able to show scientific evidence to support their choice of group designation by observing data related to reproductive isolation and speciation, and by finding inconsistencies in the diagnosis based on electrophoresis.
Step-by-step explanation:
The researchers in the article were able to show two observations that provide scientific evidence to support their choice of group designation. First, they observed data related to reproductive isolation and speciation, which justified their selection of data. Second, they diagnosed the subjects based on electrophoresis and found inconsistencies in the diagnosis. These observations supported their choice of group designation.