What is the best technique for determining the evolutionary relationships among closely related species that still have living members?
a
homologous structure analysis
b
comparative embryology
c
DNA or RNA analysis
d
comparative anatomy
c. DNA or RNA analysis
DNA or RNA analysis is the most reliable technique for determining evolutionary relationships among closely related species that still have living members, as it allows for the comparison of genetic sequences to assess genetic similarities and differences. This can provide insights into the evolutionary history and relationships between species.