TLS Online TPP Program

#Question id: 137


Disulfide bridges can form in proteins ________.

#Section 2: General Biology
  1. only between cysteine residues side-by-side in the protein sequence

  2. between cysteine residues that are close in three-dimensional space, but not necessarily close in the primary structure

  3. between two cystine residues in proteins

  4. between any two methionines or cysteines

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TLS Online TPP Program

#Question id: 3262

#Section 3: Genetics, Cellular and Molecular Biology

In a population, the genotype frequencies are: f(A1A1)= 0.35; f(A1A2) = 0.30; f(A2A2) = 0.35; Which of the following statement is correct?

TLS Online TPP Program

#Question id: 3263

#Section 3: Genetics, Cellular and Molecular Biology

From an evolutionary point of view, plant tendrils derived from leaves and those derived from stems are examples of

TLS Online TPP Program

#Question id: 3264

#Section 3: Genetics, Cellular and Molecular Biology

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

TLS Online TPP Program

#Question id: 3265

#Section 3: Genetics, Cellular and Molecular Biology

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: 3266

#Section 3: Genetics, Cellular and Molecular Biology

One species mates at the season when daylight is increasing from 13 hours to 13 hours, 15 minutes; another species mates at the season when daylight is increasing from 14 hours to 14 hours, 15 minutes. The isolating mechanism is

TLS Online TPP Program

#Question id: 3267

#Section 3: Genetics, Cellular and Molecular Biology

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?