Credit 5 Quiz

A  Become extinct

B  Become separated, but can still interbreed to produce fertile offspring

C  Interbreed

D  Become reproductively isolated

A  Natural selection

B  Sexual selection

C  Genetic drift

D  Hardy-Weinberg equilibrium

A  Male frigate birds who inflate the air sac in their chest to attract females.

B  Male widowbirds who have longer tail feathers tend to be more attractive to female widowbirds, so they have more reproductive success than those with shorter tail feathers.

C  Male bighorn sheep compete by butting heads and the winner of the competition gets to mate with the female.

D  Male jaguars with large jaws and teeth that can eat shelled reptiles, which makes them more likely to survive and to have more offspring than jaguars that can eat only mammals.

A  A large population that continues to grow exponentially.

B  Immigration of individuals into a large population, causing the population size to increase even further.

C  A volcano erupts on an island leaving only a few survivors in a population.

D  A population is completely wiped out due to disease.

A  A bat wing and an insect wing

B  A snake tail and a monkey tail

C  A dolphin fin and a shark fin

D  A human hand and a cat paw

A  The fossil record

B  Geographical distribution of organisms

C  All of these

D  Anatomical structures

A  Adaptation

B  Variation

C  Uniformitarianism

D  Descent with modification

A  The tortoises Darwin noticed on the Galapagos Islands that had developed different sized necks based on selective pressures from the environment.

B  The fossils that Darwin noticed from huge animals like Glyptodon, a giant armadillo, that looked very much like living species.

C  The finches that Darwin noticed on the Galapagos Islands that had developed different shaped beaks based on selective pressures from the environment.

D  The pigeons Darwin noticed that had traits such as reverse neck feathers that had been selectively bred by humans.

A  The finches had beaks of different sizes and shapes that were suited to the available food.

B  The finches had gone extinct from the islands due to volcanic activity.

C  All of the finches looked exactly the same regardless of the island they came from.

D  The finches had the same beak sizes and shapes as the mainland finches.