Bio 2 Chapter 15 Questions

Which individual would be considered the fittest? A. Individual that has the longest canine teeth within the group B. Individual that has the greatest number of breeding opportunities C. Individual that has the best camoflauge to avoid predators D. Individual that controls the largest territory E. Individual that has the greatest number of offspring

Which of the following is not one of the conditions required for Hardy-Weinberg equilibrium? A. Mutations must not occur. B. Natural selection must not occur. C. Random mating must not occur. D. Genetic drift must not occur. E. Assortative mating must not occur.

Which Hardy-Weinberg condition is violated by sexual selection? A. no mutations B. no natural selection C. random mating D. no genetic drift E. no gene flow

Which of the following examples is one of genetic drift? A. A forest fire kills all plant life south of a highway. B. Rabbits with longer fur survive the winter. C. Insects resistant to insecticide survive crop dusting. D. Colorful lizards living on brown leaves are most often eaten by predators. E. Flowers with larger flowers attract more butterflies than smaller flowers.

Which of the following does not result in a decrease of genetic variation? A. natural selection B. genetic drift C. bottleneck effect D. founder effect E. mutation

If the average leg size of a reptile continually got smaller through generations, this would be an example of A. disruptive selection. B. stabilizing selection. C. directional selection. D. genetic drift. E. bottleneck effect.

If people with freckles preferentially mate with other people with freckles, this would be an example of A. microevolution. B. natural selection. C. genetic drift. D. nonrandom mating. E. gene flow.

All of the genes and all of their associated alleles within a population represent the population's A. genotype. B. gene flow. C. gene pool. D. genome. E. Hardy-Weinberg equilibrium.

The figure shown here represents stabilizing selection. What happens when an individual is produced that possesses a trait far away from the mean value? A. That extreme individual will likely not survive and reproduce. B. That extreme individual will be more likely to survive and reproduce. C. That extreme individual will have neither an advantage nor a disadvantage than other individuals. D. All phenotypes have equal likelihood of surviving and reproducing. E. The average phenotype is less likely to survive and reproduce.

If a population recovers to its original population size after experiencing a bottleneck, which statement is correct regarding this population? A. The recovered population is as likely to go extinct as is the population prior to the bottleneck. B. The bottleneck subjected the population to directional selection. C. The recovered population shows less genetic diversity that the population prior to the bottleneck. D. The recovered population shows more genetic diversity than the population prior to the bottleneck. E. The recovered population is more likely to go extinct as is the population prior to the bottleneck

What characteristic do a bottleneck and a founder effect have in common? A. Both encounter a population crash. B. Both involve a portion of a population becoming isolated. C. Both involve a decrease in a population's genetic diversity. D. Both affect the entire population. E. Both are a type of natural selection.

The frequency increase of dark phenotypes in response to increased pollution is called A. genetic drift. B. founder effect. C. industrial melanism. D. assortative mating. E. stabilizing selection.

Microevolution is not influenced by which of the following? A. mutation B. random mating C. gene flow D. natural selection E. genetic drift

Biotic environments that influence natural selection includes all but which of the following? A. competition B. predation C. parasitism D. weather E. disease

Which of the following is most likely an example of a founder effect event? A. A random small group of a bird population migrates to an island and then returns to breed. B. A random large group of a bird population migrates to an island and then returns to breed. C. A selected small group of a bird population migrates to an island and then returns to breed. D. A random small group of a bird population migrates to an island and does not return to breed. E. A random large group of a bird population migrates to an island and does not return to breed.

In the process of natural selection, individuals that are most fit are the ones that are A. most likely to survive. B. most likely to reproduce. C. most likely to migrate. D. most likely to mutate. E. most likely to be physically fit.

The usage of the insecticide DDT to control mosquitos resulted in A. directional selection to insecticide resistance in the insects. B. stabilizing selection to insecticide resistance in the insects. C. disruptive selection to insecticide resistance in the insects. D. genetic drift to insecticide resistance in the insects. E. no change in the insect population.

British land snails primarily occur in two extreme phenotypes. This is an example of A. directional selection. B. stabilizing selection. C. disruptive selection. D. genetic drift. E. mutation.

Individuals who inherit sickle cell disease, a recessive disorder, tend to die at an early age while individuals who are homozygous for their blood cells survive. How does the recessive allele persist in the population? A. New individuals who are recessive for sickle cell will migrate into the area. B. Spontaneous mutations will occur on Homozygous individuals that causes them to develop a recessive allele. C. The recessive allele will not persist within the population. It is always weeded out. D. Each generation some individuals will be born that by chance will inherit the recessive allele. E. Individuals who are heterozygous for the sickle cell trait have an advantage in certain environments.

A fraction of the original green frog population survives to reproduce and generate the new population. If the survivors of the original population survived by chance, then this event is an example of A. natural selection. B. genetic drift. C. founder effect. D. industrial melanism.

If the survivors of an original population survived due to specific phenotypes that they possessed, then this event is an example of A. natural selection. B. genetic drift. C. founder effect. D. industrial melanism.

Polydactylism (possessing more than five fingers per hand) within the Amish population in Pennsylvania is considered an example of founder effect. This is because the frequency of polydactylism among the Amish in Pennsylvania is identical to its frequency among the Amish population in Germany. True False

What is the genotype of an individual that is lives in protection from both sickle cell disease and malaria? A. HbAHbA B. HbAHbS C. HbSHbS D. HbS Hbs E. HbA Hba

Microevolution is the term that applies to which of the following? A. Any evolution at any scale is considered microevolution. B. Large-scale changes over a long period of time. C. Small-scale changes over a long period of time. D. Small-scale changes over a short period of time. E. Changes of any scale within microorganisms.