Exam 5: Ecological Genetics: Adaptation and Natural Selection

Natural selection is a function of

Most traits are influenced by only one locus.

Under which of the following conditions would genetic drift exert the greatest influence?

The Hardy-Weinberg principle assumes ________ mating.

An organism's structure and ________ reflect adaptations to its particular environment.

Gene flow is restricted for geographic isolates because of some extrinsic barrier.

In natural populations, the assumptions of the Hardy-Weinberg principle are usually met.

An organism that derives its energy from sunlight is a(n)________.

Researcher Beren Robinson has documented divergent natural selection in several populations of

Species are generally limited to a single isolated population.

The geographic isolates of a particular species (e.g., Plethodon of the Appalachian highlands)are considered

Peter and Rosemary Grant documented natural selection and evolution in a population of finches in the Galapagos Islands.

The type of natural selection in which the mean value of a trait is shifted toward one extreme is called ________ selection.

In the Hardy-Weinberg equation P + H + Q = 1, what does "Q" represent?

A ________ individual has the same alleles at the same locus on homologous chromosomes.

Evolution is a generational change in

The basic informational units of DNA are called ________.

The area above and below the optimum range of tolerance is known as the zone of

The simplest response an individual organism can make to a change in environmental conditions is to

Disruptive selection favours individuals possessing traits near the mean value of a population.