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

Some organisms that share a common ancestor have features that have different functions, but similar structures.

Back

homologous structures

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

The diagram illustrates an embryonic stage of two organisms. What can be determined by observing the embryos? Options: The organisms share a common ancestry., The organisms belong to the same genus., The organisms are native to the same geographic areas., The organisms will grow into anatomically similar adults.

Back

The organisms share a common ancestry.

Front

Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

Back

They have a common ancestor

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.