Evolution

Front

What does it mean if protein sequences in one organism resemble those of another?

Back

It suggests a shared ancestry between the two organisms.

Front

What is the term for the difference in physical traits among individuals in a group?

Back

Variation.

Front

What can adaptations lead populations to experience over time?

Back

Genetic changes.

Front

What is a cladogram?

Back

An evolutionary tree used to show similar characteristics among related species.

Front

How does natural selection operate?

Back

It acts on existing physical traits.

Front

What is evolution?

Back

The process by which different kinds of living organisms develop and diversify from earlier forms during the history of the earth.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to variations in traits.

Front

What is the role of genetic drift in evolution?

Back

It is a mechanism of evolution that refers to random changes in the frequency of alleles in a population.

Front

What is the significance of fossil records in understanding evolution?

Back

Fossil records provide evidence of past life forms and their changes over time.

Front

What is speciation?

Back

The process by which new species arise from existing species.