Cladistic Classification
advantages of cladistics systems
-no biases -results can be reproduced
-disadvantages of cladistics systems
-time consuming -reversal in character states can occur -parallel evolution can lead to misinterpretation
Monophyletic
A group with an ancestor and all of the descendants
apomorphy (homoplasty)
Derived character state
parsimony criterion
When choosing between 2 conflicting hypothesis the one that is most efficient, using the least assumptions is likely to be correct
who first developed cladistics?
Will Hennig
plesiomorphy
ancestral or primitive character state
symplesiomorphy
ancestral or primitive character state shared by two or more taxa
Why is cladistics a novel phylogenetic approach to plant classification?
because it determines branching patterns of evolution based on shared derived features
synapomorphy
derived character state shared by two or more taxa
parallel evolution
the independent evolution of similar traits, starting from a similar ancestral condition.
