Question

homework - cladograms and phylogenetic trees
tarsius syrichta
felis catus
balaenoptera physalus
galago senegalensis
nycticebus bengalensis
lemur catta
saimiri sciureus
colobus guereza
homo sapiens
which one of the listed organisms is more closely related to galago senegalensis than the others?
balaenoptera physalus
felis catus
lemur catta
tarsius syrichta

Explanation:

In a cladogram or phylogenetic tree, the closer the branching point (common ancestor), the more closely related the organisms. Looking at the tree, Nycticebus bengalensis and Galago senegalensis share a more recent common ancestor compared to the other options. But since Lemur catta is the next in the tree structure (assuming the tree's branching order - as the user might have a standard tree where adjacent or closer - branching - point in the given options is considered). In the absence of Nycticebus bengalensis in the options, we check the given choices. The principle is that the fewer the number of branching events (or the shorter the path) between two organisms in the tree, the closer their relationship.

Answer:

Lemur catta