Reading Cladograms and Phylogenetic Trees Review

Front

What are derived characteristics?

Back

Traits shown on phylogenetic trees that are unique to a particular group, such as 'four limbs' or 'vertebrae'.

Front

Are humans related to tuna?

Back

Yes, humans and tuna share a common ancestor.

Front

What is a common ancestor?

Back

An ancestral species from which multiple species have evolved.

Front

What do cladograms represent?

Back

Cladograms are diagrams that show the evolutionary relationships among various biological species based on shared characteristics.

Front

What is the significance of branching points in a phylogenetic tree?

Back

Branching points represent common ancestors and the divergence of species.

Front

How can you determine which organisms are more closely related on a cladogram?

Back

By looking at the branching points; organisms that share a more recent common ancestor are more closely related.

Front

What is the role of traits in phylogenetic trees?

Back

Traits help to identify relationships and evolutionary history among species.

Front

What does it mean if two species share a derived characteristic?

Back

It indicates that they likely share a more recent common ancestor.

Front

What is the difference between homologous and analogous traits?

Back

Homologous traits are inherited from a common ancestor, while analogous traits arise independently due to similar environmental pressures.

Front

What is a phylogenetic tree?

Back

A diagram that depicts the evolutionary history and relationships among species.