Evidence of Evolution

Front

What does the similarity in bone arrangements among different organisms suggest?

Back

These organisms share a common ancestor.

Front

What are structures that are similar in appearance but not in structure called?

Back

Analogous Structures.

Front

What is the term for a structure that is no longer needed for survival, like the appendix?

Back

Vestigial Structure.

Front

In a sequence of rock layers, which layer is typically the youngest?

Back

The top layer.

Front

In a sequence of rock layers, which layer is typically the oldest?

Back

The bottom layer.

Front

What is the term for structures that have a similar origin but may serve different functions?

Back

Homologous Structures.

Front

What type of evidence supports the theory of evolution through common ancestry?

Back

Fossil records, comparative anatomy, and genetic similarities.

Front

What is the significance of vestigial structures in evolutionary biology?

Back

They provide evidence of an organism's evolutionary past.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry; analogous structures do not.

Front

What is the role of embryonic development in understanding evolution?

Back

Similarities in embryonic stages can indicate common ancestry.