Question

if a group that was thought to be monophyletic (morpholgy data) is show to be paraphyletic (DNA data) how would you try to resolve this issue?

Answer 1

To solve this question, we have to learn about Cladograms.so, Cladograms are diagrams used to demonstrate the relationship between species.it useful in mapping the evolutionary history of lineages of organisms.

NOTE : Cladistics ,is the method of classification of animals and plants according to the proportion of measurable characteristics that they have in common.

Now we understand the relationship between a taxonomic group and a phylogenetic tree is important for this theory.the relationship can take one of three forms 1.monophyly 2.paraphyly 3.polyphyly.

as per your question i am discuss about monophyletic and paraphyletic group.

fig 1,relationship between phylogeny and taxonomic groups illustrated for a hypothetical phylogeny of eight species (A through H),A Monophyletic group contains the most recent common ancestor of all members of the group and all of its descendants .

Fig 2,A paraphyletic group contains the most recent common ancestor of members of the group and some but not all of its descendants of that ancestor.

As per this question, this is possible that monophyletic (morphology data) is show to be paraphyletic (DNA data),because in monophyletic group,it contains ancestors of all members and also of its descendents .but in paraphyletic group ,it contains only most recent common ancestors of all members.so,morphology data that also includes the DNA data,but DNA data does not includes the morphology data.