TLS Online TPP Program

#Question id: 1840


What does the term variolation refer to?

#Section 2: General Biology
  1. The generation of antibody variable regions

  2. The attenuation of virulent organisms

  3. Innoculation of scab material into small skin wounds

  4. The removal of scab material from an individual with smallpox

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TLS Online TPP Program

#Question id: 3336

#Section 3: Genetics, Cellular and Molecular Biology

There are 4 alleles at a given locus in a diploid population and all alleles are equal abundant. What is the proportion of all homozygotes in the population?

TLS Online TPP Program

#Question id: 3337

#Section 3: Genetics, Cellular and Molecular Biology

Small populations are threatened by a least loss of genetic variability is due to

TLS Online TPP Program

#Question id: 3338

#Section 3: Genetics, Cellular and Molecular Biology

If the expected frequency of heterozygotes in a population (based on the Hardy–Weinberg law) is 0.4, but the observed frequency is 0.2, what is the inbreeding coefficient?

TLS Online TPP Program

#Question id: 3339

#Section 3: Genetics, Cellular and Molecular Biology

In a plant species, flower color locus either homozygous or heterozygous with genotype RR-red, Rr- pink and rr- white. The Proportional of pink flower in generation 0 is .50.  What is the level of remaining pink flower in a third generation of repeated selfing? 

TLS Online TPP Program

#Question id: 3340

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements is NOT correct regarding effect of genetic drift?

TLS Online TPP Program

#Question id: 3341

#Section 3: Genetics, Cellular and Molecular Biology

In a given population of 400 individuals, 64 percent of population is caused  cancer due to completely dominat allele B. Assuming the population is in Hardy- Weinberg equilibrium, which of the following is the expected proportion of individuals who are not expected to develop the cancer?