Evidence of Evolution Practice 24

Front

What do animals with homologous bone structures have in common?

Back

They share a common ancestor.

Front

Which organism is more closely related to organism 4, organism 3 or organism 5?

Back

Organism 3.

Front

What does 'descended in evolution' mean?

Back

It means came from a common ancestor.

Front

What are vestigial structures?

Back

Organs found in organisms that have lost their function (leftover organs).

Front

Which organism is least related to the others?

Back

Organism 2.

Front

What is a common ancestor?

Back

An ancestral species from which multiple species have evolved.

Front

Define homologous structures.

Back

Structures in different species that are similar due to shared ancestry.

Front

What is the significance of vestigial structures in evolution?

Back

They provide evidence of an organism's evolutionary past.

Front

What does evolutionary descent imply?

Back

It implies that species have evolved from common ancestors over time.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry; analogous structures serve similar functions but do not share a common ancestor.