Common Ancestry Review

Front

What can scientists infer if they find a fossil in an area that was once covered by water?

Back

That water once covered the area where this fossil was found.

Front

What does a lower amino acid difference between species indicate?

Back

It points to a closer common ancestor between the species.

Front

Which two organisms are humans most closely related to based on amino acid sequences?

Back

Gorillas and chimpanzees.

Front

What does it suggest if Organism A is considered more primitive than Organisms B and C?

Back

Organism A was probably more primitive than Organisms B and C.

Front

Which two domains of life are most closely related?

Back

Archaea & Eukarya.

Front

What is common ancestry?

Back

The concept that different species share a common ancestor from which they have evolved.

Front

How can fossils provide evidence for common ancestry?

Back

Fossils can show physical traits and structures that link different species to a common ancestor.

Front

What role do amino acids play in determining evolutionary relationships?

Back

Amino acids are the building blocks of proteins, and comparing sequences can reveal how closely related different species are.

Front

What is the significance of the fossil record in understanding evolution?

Back

The fossil record provides evidence of how species have changed over time and their relationships to one another.

Front

What does it mean if two species are classified in the same genus?

Back

They share a more recent common ancestor compared to species in different genera.