TLS Online TPP Program

#Question id: 12259


Which of the following is an example of exploitation competition? 

#Section 1: Ecology
  1. Fungi limit the growth of bacteria in their vicinity by releasing antibiotics
  2. Hummingbirds chase other hummingbirds away from flowering plants
  3. The population of one plant species reduces an essential nutrient element below the minimum level required to support the population of a second plant species, which is eliminated
  4. Shrubs of the genus salvia release toxic chemicals that inhibit the growth of other vegetation
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TLS Online TPP Program

#Question id: 3324

#Section 2: Evolution

If only 20 males and 20 female grizzlies exist today, but only 10 of the males and 6 female breed, what are effective population size?

TLS Online TPP Program

#Question id: 3325

#Section 2: Evolution

The frequency of the dominant red allele (R) in a population of diploid organisms is equal to the frequency of the recessive white allele (r). The frequency of red individuals assuming Hardy-Weinberg equilibrium is (express the frequency using decimal notation, not as a fraction or a percentage)

TLS Online TPP Program

#Question id: 3329

#Section 2: Evolution

The following genotypes of one locus in population are given  - Genotype ( Number)

AA (120)  AB ( 30)  BB  (50) CC  (300)

AC  (400)  BC (100)

Which of the following is the correct frequency of C allele and A allele respectively?

TLS Online TPP Program

#Question id: 3338

#Section 2: Evolution

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 2: Evolution

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: 3341

#Section 2: Evolution

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?