Question 21 (3 marks) (a) Name ONE technology that could be used to establish evolutionary relationships - HSC - SSCE Biology - Question 21 - 2003 - Paper 1

DNA sequencing provides a detailed look at the genetic material of organisms. By comparing the sequences of DNA from different species, scientists can identify similarities and differences in their genetic makeup. This information can be used to construct phylogenetic trees, which illustrate the evolutionary paths and relationships between various organisms. The degree of genetic similarity often reflects the evolutionary closeness, allowing researchers to infer how recently two species shared a common ancestor.