Unit 8 - Evolution Test Review

Which is the definition of evolution?

• The change in allele frequencies in a species over time

• Change in species over a short period of time

• Nature choosing traits in a species

• Humans choosing favorable traits in a species

If a population suffers a dramatic reduction in population, creating a population of organisms with similar genetics, the population is experiencing

• Founder Effect

• Artificial Selection

• Bottleneck Effect

• Natural Selection

20 finches migrate from the mainland of South America to one of the Galapagos Islands. This population's allele frequencies is due to __________.

• Bottleneck Effect

• Founder Effect

• Natural Selection

• Artificial Selection

Structures that have a similar structure but perform a different function are ____________ structures.

• Homologous

• Analogous

• Vestigial

• Abnormal

Homologous structures are inherited...

• Due to similar environments

• From a common ancestor

• due to natural selection

• because of evolution

Why would a new trait from a naturally occurring DNA mutation increase in frequency in the population over time?

• The new trait is beneficial in the environment

• It won't

• It will be random if the new trait stays in the population

• Organisms with the new trait do not survive to reproductive age

According to Charles Darwin, individuals that tend to survive...

• have ancestors with bad traits

• are closely related to all other species on Earth

• have adaptations best suited to the environment

• are dinosaurs

If a group of moths have an allele for white wings and an allele for spotted wings, what would happen to the moth population if the trees they live on become spotted?

• The moths will become spotted

• The moths will become dark

• The moths will stay white

• Nothing will happen to the moth population

Structures that allow organisms to perform the same function even though they do not share a common ancestor are called _________ structures

• Homologous

• Analogous

• Vestigial

• Random mutation

How do fossils demonstrate evidence of evolution?

• Show that all modern species are closely related

• Fossils do not support the theory of evolution

• Show that hominids are not closely related to apes

• Show that ancient species are similar to modern species