Exam 12: Processes of Evolution

Classification.The statements are related to macroevolution.For each one,select the best choice from the following terms. a.stasis b.adaptive radiation c.exaptation d.coevolution e.mass extinction -this often sets the stage for adaptive radiation

Classification.The statements relate to taxonomy.For each one,select the best choice from the following terms. a.character b.clade c.cladistics d.evolutionary tree e.monophyletic group f.phylogeny g.sister groups h.cladogram i.taxon -diagram that shows a network of evolutionary relationships

One extreme variation of a phenotype will be found during which type of selection?

The nodes on a cladogram represent

A female bowerbird being unable to recognize the mating ritual of a male toucan is an example of what type of isolating mechanism?

Which population's allele frequency is considered to be fixed?

Any change in allele frequencies in a gene pool is

In the 16th century,a Spanish ship explored a Pacific Island that had a small mountain range separating it.Mice that were on the ship escaped onto the island on both sides of the mountain range.After decades of separation the two populations developed different numbers of chromosomes and in spite of the populations coming together again,the chromosomal differences prevented successful interbreeding.What is true about this speciation event?

With the extinction of the dinosaurs 65 million years ago,multiple niches that the dinosaurs once filled opened up and allowed mammals the opportunity to evolve and exploit those niches.In other words,mammals underwent a(an)

What event will increase the frequency of a mutation in a population over time?

The mutation rate for the human species is ___ mutations per base pair per year.

If the allele frequency of a population of ducks changes from one generation to the next,the population is undergoing

Male songbirds sing to attract females to mate with.Different species of male songbirds sing different songs that will attract only the females of their species.This is an example of ___ isolation.

Considering alligators and birds,which of the following is a derived character?

Predator hunting tactics and prey defense mechanisms are examples of

Being a carrier for sickle cell anemia results in

The poison,warfarin,causes internal

Match the evolutionary concepts correctly with the descriptions or examples of the concepts.Matches are not necessarily equal. a.exaptation g.directional selection b.ecological isolation h.disruptive selection c.mechanical isolation i.genetic drift d.behavioral isolation j.founder effect e.sexual selection k.gene flow f.temporal isolation -homozygous dominant black mice are camouflaged by dark rocks and homozygous recessive light-colored mice are camouflaged by light colored rocks.Heterozygous grey mice have no camouflage and are easily picked off and eaten by hawks.

A population is experiencing ____ if the allele frequency remains stable.

Cladograms are used to