AP Bio evolution

Fitness is defined by its ability to

• survive

• reproduce

• avoid extinction as a species

If an animal is living in an environment that is becoming colder, it is more likely that a mutation well-suited for cold whether will occur than a mutation well-suited for warm weather.

• True

• False

The level of selective pressure tends to ________ when environments change

• Increase

• Decrease

• Stay the same

Select all of the forms of structural evidence indicates common ancestry of all eukaryotes

• Genes that contain introns

• Lack of cell walls

• Membrane-bound organelles

• Linear chromosomes

• Lysosomes

Which organism best exemplifies that evolution is still occurring today?

• Staphylococcus bacteria

• Bats

• Whales

• Sea anemone

• Horses

Populations with _______ genetic diversity are more resistant to extinctions

• High

• Low

Which of the following is most commonly used to determine the age of fossils?

• Radium

• Hydrogen bonding

• DNA

• Carbon isotopes

Eye spots in underground cave dwelling fish are examples of _________ structures

Bats and birds both having wings despite their common ancestor not having wings is an example of

• Vestigial structures

• Convergent Evolution

• Biogeography

• Homology

• Homologous Genes

What is the fossil that shows the transition between aquatic and terrestrial tetrapods?

• Megaladon

• Entelognathus primordialis

• Lucy

• Tiktaalik roseae

• Archaeopteryx