1. a cladogram is a hypothesis about evolutionary relationships. explain how hypotheses about evolutionary relationships can be tested.
2. why do some cladograms have a very clear branch order and others contain polytomies?
2. why do some cladograms have a very clear branch order and others contain polytomies?
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1. cladograms are formed by a few different methods. One is by comparing structural features and grouping them in like groups. A more precise way is by comparing DNA and grouping them in like groups.
2. A polytomy happens when there is not enough information to narrow a node down to two branches. This is sometimes thought to be a multiple speciation event.
2. A polytomy happens when there is not enough information to narrow a node down to two branches. This is sometimes thought to be a multiple speciation event.
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they vary