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.