Question

What method of classification is based on DNA and evolutionary relationships?

Answer 1

Whatever I know about this, I am enlisting below.

Explanation:

German biologist Hennig first successfully integrated concept of evolutionary history with biological classification that he referred as Phylogenetic Systematics (phylogeny=evolutionary tree).

Many prominent biologists realised the need to focus on evolutionary history while classifying organisms in the early years of twentieth century, but their approach was limited to their own fields of ornithology or entomology, etc. Their form of classification came to be known as evolutionary taxonomy. The idea climaxed as Phylogenetic systematics. It is a form of natural biological classification, which later became popular as Cladistics .

After application of DNA sequencing techniques to assess molecular differences between different organisms evolved, a new branch of Molecular Phylogenetics came into existence.

Nowadays, there is an effort to combine cladistics and findings of DNA analysis in so called Post-Phylogenetic Systematics.