5. According to the concept of punctuated equilibrium, the "sudden" appearance of a new species in the fossil record means that O the species is now extinct O speciation occurred in one generation the species will consequently have a relatively short existence O speciation occurred rapidly in geologic time

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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.