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TLS Online TPP Program

#Question id: 4632

Which of these conditions should completely prevent the occurrence of natural selection in a population over time?

#Section 2: Evolution

  1. All variation between individuals is due only to environmental factors.

  2. The environment is changing at a relatively slow rate.

  3. The population size is large.

  4. The population lives in a habitat where there are no competing species present.

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TLS Online TPP Program

#Question id: 12760

#Section 5: Applied Ecology & Evolution

Which of the examples below provides appropriate abiotic and biotic factors that might determine the distribution of the species in question?
TLS Online TPP Program

#Question id: 12762

#Section 5: Applied Ecology & Evolution

Find  appropriate option for  given question . The figure above depicts the intensity versus frequency curve of an a2coustical receptor of the larva of a noctuid moth. The larva is preyed on by a wasp whose vibrating wings produce a0buzz.
On the basis of the figure, it can be predicted that the wasp buzz 1has a frequency
TLS Online TPP Program

#Question id: 12956

#Section 5: Applied Ecology & Evolution

For  nearly 200  years, biogeographers have  noted that  the  tropics  have  more terrestrial species than  temperate regions. Which of the following is NOT a plausible explanation for this pattern?
TLS Online TPP Program

#Question id: 12957

#Section 5: Applied Ecology & Evolution

Dichlorodiphenyltrichloroethane is related to the phenomenon of:
TLS Online TPP Program

#Question id: 12959

#Section 5: Applied Ecology & Evolution

Ozone layer depletion, since the 1970s, is primarily
TLS Online TPP Program

#Question id: 12960

#Section 5: Applied Ecology & Evolution

The Norway rat (Rattus Norvegicus), a widespread pest, was controlled for about a decade by the anticoagulant warfarin. This chemical substance, placed in food pellets, is absorbed by the intestinal tract and inhibits the clotting of blood. After a population decline for about 10 years, rat populations increased and stabilized. In one European population, as illustrated in the graph below, the percentage of rats resistant to warfarin has remained fairly stable over a number of years.

Resistance to warfarin is governed by a dominant autosomal gene, R. More than 15 percent of the resistant animals are heterozygous at this locus (Rr). The table below indicates the response to warfarin and relative reproductive fitness of individuals that are homozygous or heterozygous for the dominant gene (R). The RR individuals have a 20-fold increase in vitamin K requirement over individuals.

Fitness is a measure of the reproductive success of a particular genotype. The highest fitness is 1.00.
Which of the following is most likely correct concerning the gene for resistance to warfarin?