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 (a)   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