When several possible phylogenetic trees can be produced from a data set, the MOST parsimonious tree is the one that shows the:
A)smallest number of evolutionary changes.
B)largest number of nodes.
C)largest number of analogous characteristics.
D)smallest number of synapomorphies.
E)smallest number of branches.

Question

Quizplus · Accepted Answer

The principle of parsimony states that the tree that requires the fewest number of evolutionary changes is the most likely to be accurate. This is because it is generally believed that evolution strives for simplicity and efficiency, and therefore the simplest explanation is often the best. Therefore, the most parsimonious tree is the one that shows the smallest number of evolutionary changes.

When Several Possible Phylogenetic Trees Can Be Produced from a Data