Species

Reproductive Isolation Concepts 237

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B

A

Figure 8.1 Lineages, redrawn from de Quierioz.

1999).

Lineages contrasted with clades, clans, and clones.... All of the branching diagrams represent

the same phylogeny with different lineages highlighted in A and different clades, clans, or clones

highlighted in B. Notice that the lineages are unbranched and partially overlapping, whereas the

clades, clans, or clones are branched and either nested or mutually exclusive. Additional (partial)

lineages can be recognized for paths beginning at various internal nodes.