Evidence for Evolution

Front

What is the main reason evolutionists believe humans, birds, whales, and lizards have similar arm bones?

Back

They have a common ancestor.

Front

What type of structures are similar in different species due to shared ancestry?

Back

Homologous structures.

Front

What type of structures serve similar functions but do not share a common ancestry?

Back

Analogous structures.

Front

What is a vestigial structure?

Back

A structure that has lost most or all of its original function through evolution.

Front

What evidence did Wegener use to support the theory of continental drift?

Back

The shape of the continents, similar fossils found on separate continents, and plant fossils found in odd places.

Front

What is the significance of fossil layers in understanding the age of fossils?

Back

Fossils found in deeper layers are generally older than those found in upper layers.

Front

What is the term for structures that are remnants of organs or structures that had a function in an early ancestor?

Back

Vestigial structures.

Front

What is the difference between homologous and analogous structures?

Back

Homologous structures share a common ancestry, while analogous structures do not.

Front

What does the presence of similar fossils on different continents suggest?

Back

It suggests that those continents were once connected.

Front

What is the role of natural selection in evolution?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.