Practice Questions

TLS Online TPP Program

#Question id: 10684

Which one of the following statements is INCORRECT?

#Section 2: Evolution

kleptoparasitism is a type of parasitism involving theft of resources from one individual by another
Interference competition are present in only vertebrate while absent in invertebrate
Intrasexual selection, males compete with one another for the opportunity to mate with a female
The result of haplodiploidy, females are more related to their sisters than they would be to their own offspring

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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?

TLS Online TPP Program

#Question id: 12687

#General Aptitude

If the diagonals of two squares are in the ratio of 2 : 5, their area will be in the ratio of

TLS Online TPP Program

#Question id: 16842

#General Aptitude

Bolt from the blue

TLS Online TPP Program

#Question id: 16843