What was the first conclusion Darwin made soon after returning from the Galápagos Islands?

• Wild finch diversity explained the breeding of domesticated animals.

• New species of finches could emerge through small ancestral changes

• natural selection was the evolutionary mechanism of species change

• variety among Galapagos birds resulted from evolutionary changes

Which bird trait is an example of a derived trait?

• claw

• feather

• tail

• wing

Which explains why cytochrome c provides a broad-ranged comparison of evolutionary relationships?

• The molecule experienced little change over long periods of history.

• ATP molecules steadily change cytochrome c structure over time.

• Amino acids prevent significant molecule change in the enzyme.

• The compound evolves during times of accelerated evolution.

If a hypothetical colony of 100 humans isolated themselves on an island, their genetic makeup after several generations would be determined by ____.

• founder effect

• a bottleneck

• genetic drift

• natural selection

The evolution of a second jaw in the cichlid fish is called ___.

• adaptive radiation

• allopatric speciation

• gradualism

• coevolution

Darwin would have called the breeding of larger tomato plants by farmers ___.

• convergent evolution

• artificial selection

• divergent evolution

• natural selection

The speciation of five modern tiger species from on ancestral species is called ___.

• adaptive radiation

• allopatric speciation

• evolution

• sympatric speciation

Studying the structures of organisms during the early stages of development is called ___.

• neonatal

• obstetrics

• embryology

• pediatrics

The DNA similarities within a population of wild animals that appears as though they have been inbred is called a(n) ___.

• bottleneck

• natural selection

• founder effect

• genetic drift

The theory of punctuated equilibrium seeks to replace the speciation model known as ___.

• allopatric speciation

• gradualism

• catastrophism

• uniformitarianism