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? 

#Question id: 3378

#Section 2: Evolution

Following certain conditions is present in a population?

A- Large Population

B- Each locus follows complete dominance

C- No reproductive advantage

D- No migration

E- No linkage between genes

Which of the following above condition allowed to validity of Hardy- Weinberg Prediction?

#Question id: 3380

#Section 2: Evolution

Human population having mutant allele to caused color blindness, following different phenotype frequency?

#Question id: 3382

#Section 2: Evolution

Researchers in the Netherlands studied the effects of parental care giving in European kestrels over 5 years. The researchers transferred chicks among nests to produce reduced broods (three or four chicks), normal broods (five or six), and enlarged broods (seven or eight). They then measured the percentage of male and female parent birds that survived the following winter. (Both males and females provide care for chicks.) Which of the following is a conclusion that can be drawn from this graph?

#Question id: 3384

#Section 2: Evolution

In a sample from an African population, the frequency of blood group allele IA, IB and IO were 0.30, 0.20 and 0.50 respectively. What is expected number of homozygous and heterozygous respectively when population size 1200?

#Question id: 3387

#Section 2: Evolution

Observe the following hypothetical populations Which of these populations, if any, is in Hardy-Weinberg equilibrium

#Question id: 3388

#Section 2: Evolution

This graphical presentation emphasizes following important consequences of the Hardy-Weinberg principle.

 a. The frequency of heterozygous is highest when p equal to q

b. Rare alleles are found primarily in heterozygotes

c. This frequency distribution will not change from generation to generation once a population is in Hardy-Weinberg equilibrium

d. The equal distribution of genotypes when p equal to q

Which of the following is correct?