Evolution Review

______________ is the inherited changes in a population over time.

Darwin made most of his observations on the ___________________ Islands.

Which is NOT an observation made by Darwin?

• Species in similar habitats have similar traits

• Related species vary across different habitats

• Individuals can acquire traits in their lifetime and pass them on

• Extinct species have similarities to current species

Natural selection states that individuals with traits better suited to their environment will survive and _____________.

A trait that increases an organism's ability to survive, such as the horn on a rhino, is called an ______________________.

_____________________ structures are similar structures inherited from a common ancestor that have different jobs depending on the organism.

• Homologous

• Analogous

• Vestigial

• Molecular

Which best explains the photo above?

• The frequency of the purple allele decreased because it is a recessive trait.

• The frequency of the white allele increased because the white phenotype became more common in the population over time.

• The frequency of the alleles did not change because there are still the same amount of flowers.

What type of selection is this?

• Stabilizing

• Disruptive

• Directional

Select the TWO types of genetic drift (when a trait becomes more common by chance).

• Natural Selection

• Bottleneck effect

• Founder effect

• Reproductive Isolation

A ________________ is defined as a group of organisms that can reproduce AND make fertile offspring .