TLS Online TPP Program

#Question id: 12573


Which of the following conditions is the most likely indicator of a population in an extinction vortex? 

#Section 5: Applied Ecology & Evolution
  1. The population is geographically divided into smaller populations.
  2. The species is found only in small pockets of its former range
  3. The effective population size of the species falls below 500.
  4. Genetic measurements indicate a continuing loss of genetic variation.
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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?

TLS Online TPP Program

#Question id: 3392

#Section 2: Evolution

Color blindness is X linked recessive disorder. X+ chromosome carry a normal allele but Xc chromosome carries defective allele. When frequency of colorblindness female (0.10), colorblind male (0.30) and heterozygous female (0.20). Random matting population, what will be frequency of carrier female?