Evolution Flashcard

Front

In Biology, what is evolution?

Back

This is the gradual change of heritable traits of living things over time.

Front

TRUE OR FALSE: Evolution states that all living organisms descended from a single common ancestor.

Back

True

Front

While on the Galapagos islands, Darwin observed variety in one type of animal that was later used to help him form his theory of natural selection.

Back

Finches

Front

Natural selection can also be described as "Survival of the ____________".

Back

Fittest

Front

A characteristic that enables an organism to survive in its environment is called a/an _______________.

Back

Adaptation

Front

Another example of genetic drift is when a large proportion of the population is lost, e.g. through natural disaster. The surviving population may not be representative of the original population. This is known as the "__________" effect.

Back

Bottleneck

Front

Which name is given to the preserved remains or traces of dead organisms?

Back

Fossils

Front

What do we call structures that no longer have a function in an organism? Example: Coccyx (tailbone)

Back

Vestigial

Front

What do we call structures found in different species that have shared ancestry?

Back

Homologous

Front

Which layer of rock is the oldest? The image below shows fossils found in rock. Options: A, B, C

Back

C