Exam 4: Population Genetics and Natural Selection

For thousands of years, humans have bred domesticated plants and animals to produce and maintain desirable traits, such as large fruits. Darwin used which term to describe this:

Vila-Aiub and colleagues found that populations of the weed Sorghum halepense that have been persistently exposed to the herbicide, glyphosate, were not resistant to its effects.

What results could Clausen, Keck, and Hiesey have expected to see if alpine, mid-elevation, and lowland populations of sticky cinquefoil (Potentilla glandulosa) were not genetically different?

Hardy-Weinberg equilibrium equation:

The number of offspring contributed by an individual to future generations is called _________________.

Locally adapted and genetically distinctive populations within a species are referred to as

The alternate form of a gene is called a(n) _________________________________.

For a population in Hardy-Weinberg equilibrium, in a situation where there are only two alleles at a particular locus, the proportions of genotypes are: SS = 0.64, Ss = 0.32, and ss = 0.04. Calculate the allele frequency for the recessive allele.

In a population of birds, the average beak size is selected against and the large and small sized beaks are selected for. This is an example of

Using microsatellite DNA, Douglas and Brunner concluded that populations of Coregonus found in the Alps were highly differentiated and should be managed as separate units.

The populations of Chihuahua spruce (Picea chihuahuana) have been fragmented due to changing climatic conditions. This has resulted in

Adaptation to the environment by a population does not include

In a population of lizards, the average and long length tails are selected against and the short tails are selected for. This is an example of

All of the following conditions are included in the Hardy-Weinberg equilibrium principle except:

Within a population, if the average is selected for and the two opposing extremes are selected against, this is an example of

______________________ can change population gene frequencies through random processes.

Research conducted on the Glanville fritillary butterfly (Melitaea cinxia) can be summarized in all of the following statements except:

The Hardy-Weinberg principle states that

Which of the following is not part of Darwin's theory of natural selection?

Egg size in Ural owls is highly heritable and is currently undergoing stabilizing selection.