you want to decide what definition of species to use In a st

you want to decide what definition of species to use In a study. what are advantages and disadvantages of one based on DNA sequence as opposed to evolutionary and biological species concept?

Solution

Determination of species on the basis of DNA comes under genetic species concept where we use Genetic data from organelle and nuclear genome to identify species.

Advantage of Determination of species on the basis of DNA

Genetic speciation can provide independent evidence for morphological and biological species. For smaller organism like bacteria and prokaryotes the genetic species concept can save lot of time. With web database and automated sequencing it is very easy and quick to analyse DNA.

disadvantage of Determination of species on the basis of DNA

This is rely on human judgement how much difference is enough to categorized a different species. Now a days DNA sample can be collected from hair, feathers, and skin for determination of a species. Which can be contaminated with the DNA Parasite or by some other means which can give a false conclusion.