When Charles Darwin discovered the various finch species on the Galápagos Islands, he was surprised to find many different but related species in such a small geographic area. Which of the following best illustrates the correlation between competitive advantage and an individual’s traits in a particular environment?(1 point) A) Different islands had very different food resources available, and only individuals that were adapted to eat those food resources survived and reproduced on that island.

B) Competition between different species for food resources led to resource partitioning of the ecosystem.

C) Mating behaviors in finch species ensure that different species of finch will not interbreed with one another.

D) Finches had no natural predators on the island before Darwin’s voyage, allowing them to prosper on the islands.

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

3test questions with answers on incomplete dominance

Identify the area on the image where the force of attraction is the strongest.