Biological Evolution and Classification

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Ancestry

An example of __________ is that marsupials live on distant continents that were joined long ago.

Codon GCA specifies alanine in most all organisms. This is an example of __________ homology.

Compared to the simple species found deep in the fossil record, newer species are more __________.

Evidence of common ancestry can be found in the __________ record.

The fossil record holds the remains of __________ organisms under the remains of younger organisms.

The theory that all organisms descended from the same ancestor is called __________ __________.

Evolution

A giraffe's long neck helps it reach food. It is an __________ that helped its ancestors survive.

Natural selection affects the traits of populations, not individual __________.

Favorable traits are those traits that help an organism survive and/or __________.

A change in a population's gene pool that is caused by chance is called genetic __________.

A change in a population's gene pool caused by the movement of organisms is called gene __________.

Recombination during meiosis and genetic mutations increase genetic __________.

Classification 1

A __________ tree depicts evolutionary history, showing when (and from what species) species arose.

All organisms in the protist kingdom belong to the __________ domain.

All organisms in the Usidae family belong to the __________ phylum.

On a phylogenetic tree, species on the same branch will have similar __________.

Organisms are classified based on their __________ and differences.

What is the genus of the grizzly bear?

Classification 2

A unicellular organism has chloroplasts and other organelles. It belongs to the __________ kingdom.

An organism gets its food (energy) from other organisms. It is a(n) __________troph.

The four kingdoms in the eukarya domain are protist, fungi, __________, and animal.

The species in an order have __________ in common than the species in a class.

The three domains are archae, __________, and eukarya.

There are fewer species in an organism's __________ than in its family.