What kinds of data do scientists use to construct phylogenetic trees (or cladograms, which can be used to construct phylogenetic trees) ?

The phylogenetic tree shows the inferred evolutionary relationships among various biological species or other entities.

To build a phylogenetic trees or cladograms, which can be used to construct phylogentic trees scientists collect data about the characters of each organism they are interested in. These data include physical characteristics (morphology), genetic sequences, and behavioral traits.