Which of the following statements best explains the importance of sister taxa for understanding the evolution of ingroup taxa?     A) The sister group informs of the likely state of the common ancestor of the ingroup.     B) The sister group is composed only of ancestral characters representing a primitive taxon having ancestral states for all characters able to be studied.     C) The sister group allows us to infer character state polarity in order to understand how character states have changed during evolution of the ingroup.     D) A & B     E) A& C     F) All of the above.

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Evolutionary lineages

An evolutionary lineage is a series of populations of organisms that descend from a common ancestor. Each species in the lineage is the direct consequence of evolutionary change from a common ancestor. A phylogenetic tree is generally used to display lineages visually. Lineages are components of the phylogenetic tree of life. Molecular systematics procedures are widely used to predict lineages.