Topic 6 Pre-Lecture Activity

Which characteristic distinguishes a bee fly from a honeybee?

• Presence of stripes

• Ability to pollinate flowers

• Number of wings

• Presence of a stinger

What does a cladogram represent?

• A detailed timeline of evolutionary events

• A hypothesis of relationships among organisms

• A classification system based on physical appearance only

• A diagram showing the exact genetic sequence of species

Which characteristic distinguishes a bee fly from a honeybee?

• Presence of stripes

• Ability to pollinate flowers

• Number of wings

• Presence of a stinger

What does a cladogram represent?

• A detailed timeline of evolutionary events

• A hypothesis of relationships among organisms

• A classification system based on physical appearance only

• A diagram showing the exact genetic sequence of species

Among the chordates listed in the example, which animal possesses a notochord but lacks vertebrae?

• Frog

• Lancelet

• Shark

• Maned Wolf

Among the chordates listed in the example, which animal possesses a notochord but lacks vertebrae?

• Frog

• Lancelet

• Shark

• Maned Wolf

In a cladogram, what does a clade represent?

• A single species at the end of a branch

• A common ancestor and all of its descendants

• An intersection point indicating a shared characteristic

• The total evolutionary time elapsed between organisms

In a cladogram, what does a clade represent?

• A single species at the end of a branch

• A common ancestor and all of its descendants

• An intersection point indicating a shared characteristic

• The total evolutionary time elapsed between organisms

What is the primary characteristic of an outgroup in a cladogram?

• It shares all listed characters with the ingroup.

• It is the most recently evolved organism.

• It is less closely related to the ingroup organisms than they are to each other.

• It is always a marine species.

Which statement best describes a shared derived character in a cladogram?

• It is found in all organisms within the cladogram.

• It evolved in a common ancestor shared by a subset of organisms.

• It is a trait that has been lost over time.

• It is only found in the outgroup.