Biology 5.2

Question 1

Cladistics

Answer 1

Based on evolutionary ancestry and makes trees called cladograms. Identifies clades

Question 2

Clades

Answer 2

Groups of organisms that include an ancestor species and its descendants

Question 3

Phylogenetic tree

Answer 3

Shows evolutionary relationships among different species. 2 species more related if they have a more recent common ancestor. Species at tip are called branches. Each branch point is called internal node that represents divergence event or speciation.

Question 4

Polytomy

Answer 4

For trees with a branch point with 3 or more different species. Branching order is unknown