Bio 3.4.1

Front

What is the oldest layer in geological terms?

Back

Layer E is the oldest layer.

Front

What does it mean if two organisms have very similar DNA sequences?

Back

It indicates that the organisms are closely related.

Front

What is a vestigial structure?

Back

A vestigial structure is a body part that has lost its original function through evolution, such as the pelvis bone in whales.

Front

What type of evidence is used when studying DNA to understand evolution?

Back

Biochemical evidence.

Front

What do similarities in homologous structures imply about organisms?

Back

They imply that the organisms evolved from a common ancestor.

Front

Define homologous structures.

Back

Homologous structures are body parts in different species that have a similar structure but may serve different functions, indicating a common ancestry.

Front

What is the significance of vestigial structures in evolutionary biology?

Back

Vestigial structures provide evidence of evolutionary change and common ancestry.

Front

What is comparative anatomy?

Back

Comparative anatomy is the study of similarities and differences in the anatomy of different species.

Front

What is the fossil record?

Back

The fossil record is a historical sequence of life on Earth, preserved in sedimentary rock, that provides evidence of evolution.

Front

What is biochemical evidence in the context of evolution?

Back

Biochemical evidence refers to the similarities in DNA, proteins, and other molecules among different organisms that suggest evolutionary relationships.