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TLS Online TPP Program

#Question id: 10708

Which of the following statements is a likely explanation for why invasive species take over communities into which they have been introduced?

#Section 1: Ecology
  1. Invasive species are less efficient than native species in competing for the limited resources of the environment.
  2. Invasive species are not held in check by the predators and agents of disease that have always been in place for native species.
  3. Invasive species have a higher reproductive potential than native species.
  4. Invasive species come from geographically isolated regions, so when they are introduced to regions where there is more competition, they thrive
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TLS Online TPP Program

#Question id: 3380

#Section 2: Evolution

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

Phenotype

Male

Female

Normal

.70

.72 heterozygous

.49 homozygous

Colour blindness

.30

.09
Which of the following frequency of color blindness allele and color blind female in their population?
TLS Online TPP Program

#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?
TLS Online TPP Program

#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?
TLS Online TPP Program

#Question id: 3387

#Section 2: Evolution

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

#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?
TLS Online TPP Program

#Question id: 3390

#Section 2: Evolution

The average numbers of offspring produced by three genotypes are: GG = 60; Gg = 30, gg = 20. What is the selection coefficient of gg?