Cladograms

Front

What is a cladogram?

Back

A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

What characteristic do all organisms on a cladogram share?

Back

Organisms on a cladogram share common characteristics that indicate their evolutionary relationships.

Front

What does a branch point on a cladogram represent?

Back

A branch point represents a common ancestor from which two or more descendant species diverged.

Front

How do you read a cladogram?

Back

To read a cladogram, start from the base and move upward; closely related species are found near each other on the branches.

Front

What is the significance of the length of branches in a cladogram?

Back

The length of branches can indicate the amount of evolutionary change or time since divergence.

Front

What distinguishes a cladogram from a phylogenetic tree?

Back

A cladogram focuses on the branching order and relationships, while a phylogenetic tree may also include information about the time of divergence.

Front

What is a common ancestor?

Back

A common ancestor is a species from which two or more species have evolved.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures are similar due to shared ancestry, while analogous structures are similar due to convergent evolution.

Front

What role do genetic similarities play in cladistics?

Back

Genetic similarities help determine evolutionary relationships and are used to construct cladograms.

Front

What is the purpose of a cladogram in biology?

Back

The purpose of a cladogram is to illustrate the evolutionary relationships and lineage of different species.