Evidence of Evolution

Front

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

Back

homologous structures

Front

Study of embryos of various organisms to show a common ancestor because of similarities in development

Back

embryology

Front

How do fossils provide evidence that evolution has happened on Earth?

Back

Fossils show how life forms present today are different than those from the past.

Front

Vestigial structures

Back

remnants of once-important structures that have slowly lost all or most of their function

Front

Which layer is the youngest? Options: 1, 2, 3, 4

Back

1

Front

What is this an example of?

Back

Analogous structure

Front

What best describes the hind leg bones seen in the whale?

Back

The bones are vestigial structures that had a function in an ancestor.

Front

If two organisms have similar traits of DNA, they are probably...

Back

share a common ancestor

Front

According to this data, the unknown bacterial species is most closely related to: Species I, Species II, Species III, Species IV

Back

Species IV

Front

When comparing the DNA of two different organisms, the more differences in the DNA base pairs the more-

Back

Distantly related they are.