Cladogram practice

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 does a node represent in a cladogram?

Back

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

Front

What is the significance of the root in a cladogram?

Back

The root represents the most recent common ancestor of all the organisms in the cladogram.

Front

What characteristic do all animals to the right of the hagfish on a cladogram share?

Back

They all have jaws.

Front

How can you identify the most recent common ancestor of two species on a cladogram?

Back

The most recent common ancestor is represented by the node where the two species diverge.

Front

What trait is represented at point A in a cladogram?

Back

The trait at point A is 'eyes'.

Front

Who is the closest relative to humans according to a cladogram?

Back

Yeast is the closest relative to humans according to the cladogram.

Front

What does the term 'phylogenetic tree' refer to?

Back

A phylogenetic tree is a branching diagram that represents the evolutionary history of a group of organisms.

Front

What is a common ancestor?

Back

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

Front

What does it mean if two species share a trait on a cladogram?

Back

If two species share a trait, it indicates that they inherited that trait from a common ancestor.