Topic 2 Evolution

An anatomical feature that no longer seams to have a purpose in the current form of an organism

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

Whales have pelvic bones. What type of structure does this best represent?

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

• Homologous
• Vestigial
• Analogous

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

What is this an example of?

• Homologous structure

• Analogous structure

• Vestigial organs

• Functional adaption

What are analogous structures?

• Organs or features in different species that have a similar function but evolved separately

• Structures in different species with a common ancestor and similar structure but different functions

• Features that serve no useful function and are considered evolutionary leftovers

• Identical structures found in all species

Penguin flipper and fish fin

• Homologous

• Vestigial

• Analogous

• None of the above

• homologous
• Vestigial
• Analogous

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial

What

type

of structure?

• Homologous

• Analogous

• Embryological

• Vestigial