The same intron was sequenced from five different taxa (taxa A-E) whose evolutio

Question

The same intron was sequenced from five different taxa (taxa A-E) whose evolutionary relationships are disputed. The data matrix given shows six variable sites (1-6, lefts column) in the DNA sequences obtained from each of the five species. Taxon A serves as the outgroup for this analysis. taxon A taxon B taxon C taxon D taxon E Which of the phylogenies below explains the relatedness between these taxa with the FEWEST evolutionary steps? Phylogeny Phylogeny 2 phylogeny II Both phylogenetic trees have the same number of evolutionary steps

Explanation / Answer

Both the phylogenies have the same number of evolutionary steps.

This is evident from the branches in the key. Taxon E and C show the least number of variation in their DNA sequence.  

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