Evidences of Evolution

Front

What does a smaller number of differences in amino acid sequencing between two organisms indicate?

Back

The organisms are closer related.

Front

According to the law of superposition, where are the oldest fossils found?

Back

Near the bottom of the rock layers.

Front

According to the law of superposition, which layer is the youngest?

Back

The top layer.

Front

What are analogous structures?

Back

Structures that have similar functions but different evolutionary origins, e.g., bee wings and bird wings.

Front

What are homologous structures?

Back

Structures that have a common evolutionary origin but may serve different functions, e.g., whale flipper and bat wing.

Front

What is the significance of the law of superposition in geology?

Back

It helps determine the relative ages of rock layers and fossils.

Front

What is a fossil?

Back

The preserved remains or traces of ancient organisms.

Front

What is the difference between homologous and analogous structures?

Back

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

Front

What is a common example of a homologous structure in mammals?

Back

The forelimbs of humans, whales, and bats.

Front

What is a common example of an analogous structure?

Back

The wings of insects and birds.