TLS Online TPP Program

#Question id: 4649


Which statement best describes the evolution of pesticide resistance in a population of insects?

#Section 2: Evolution
  1. Individual members of the population slowly adapt to the presence of the chemical by striving to meet the new challenge.

  2. All insects exposed to the insecticide begin to use a formerly silent gene to make a new enzyme that breaks down the insecticide molecules.

  3. Insects observe the behavior of other insects that survive pesticide application, and adjust their own behaviors to copy those of the survivors.

  4. Offspring of insects that are genetically resistant to the pesticide become more abundant as the susceptible insects die off.

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TLS Online TPP Program

#Question id: 3355

#Section 2: Evolution

Speciation in ancestor as following way

A- Non-swimming populations separated by a river may gradually diverge because there is no gene flow between them

B- Plants commonly exhibit polyploidy, meaning they contain three or more sets of chromosomes

C- The tendency for two species to diverge in morphology and thus resource use because of competition

Which of the following above condition allowed to which type of speciation?

TLS Online TPP Program

#Question id: 3358

#Section 2: Evolution

Populations with low effective sizes are susceptible to all of the following except

TLS Online TPP Program

#Question id: 3360

#Section 2: Evolution

Which of the following does not alter hardy Weinberg equability?

TLS Online TPP Program

#Question id: 3361

#Section 2: Evolution

In a population 16% individual affected with autosomal recessive diseased. how many are expected to be normal phenotype if population size is 250 ?

TLS Online TPP Program

#Question id: 3363

#Section 2: Evolution

An autosomal recessive condition affects 1 newborn in 100 in a random mating population without any disruptive acting force. What is the approximate expected frequency of carriers in this population?

TLS Online TPP Program

#Question id: 3364

#Section 2: Evolution

Which of the following equations represents the corresponding equilibrium for a locus with three alleles p, q and r of diploid individuals? (P, Q and R represent the frequencies of p, q and r, respectively)