TLS Online TPP Program

#Question id: 4347


According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

#Part-A Aptitude & General Biotechnology
  1. The lac operon would be transcribed continuously.

  2. Only lacZ would be transcribed.

  3. Only lacY would be transcribed.

  4. Galactosidase permease would be produced, but would be incapable of transporting lactose.

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TLS Online TPP Program

#Question id: 3264

#Part-A Aptitude & General Biotechnology

Which of the following is (are) true of natural selection?

TLS Online TPP Program

#Question id: 3265

#Part-A Aptitude & General Biotechnology

If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?

TLS Online TPP Program

#Question id: 3267

#Part-A Aptitude & General Biotechnology

In a typical Mendelian population, individuals carrying gene ‘a’ in homozygous condition suffer from phenylketonurea. Those with A in homozygous condition are normal. Others, who are heterozygotic with Aa, are carriers. If the frequency of ‘a’ in a population is 0.20, what is the percentage of normal individual in the population?

TLS Online TPP Program

#Question id: 3268

#Part-A Aptitude & General Biotechnology

A population of insects is in Hardy-Weinberg equilibrium for a gene with alleles A = orange and a = yellow eyes. There are 91% orange and 9% yellow individuals in the population. If the fitness of the yellow phenotype suddenly drops to zero, what will be the allele frequency in the next generation?

TLS Online TPP Program

#Question id: 3269

#Part-A Aptitude & General Biotechnology

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of

TLS Online TPP Program

#Question id: 3270

#Part-A Aptitude & General Biotechnology

Heterozygote advantage should be most closely linked to which of the following?