Question

what is molecular phylogeny (in simple words)

Answer 1

Molecular phylogeny or molecular phylogenetics is the branch of phylogeny and science of estimating and analyzing evolutionary relationships.

Answer 2

Molecular Phylogeny is a method to trace evolutionary relationships between same species or different species. In this method the DNA, RNA or Proteins are compared to  find the evolutionary distance between species. The approach  is based on  the species which would be more related would  accumulate more differences in DNA.
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