TLS Online TPP Program

#Question id: 3949


Which of the following observations supports the view that ribosomal RNA has catalytic activity?

#Section 3: Genetics, Cellular and Molecular Biology
  1. The base sequence of rRNAs is highly conserved, whereas the amino acid sequence of ribosomal protein is not.

  2. Bacteria that develop antibiotic resistance have base substitutions on the rRNA, but do not have amino acid substitutions on the ribosomal proteins.

  3. The peptidyl transferase reaction is sensitive to ribonucleases.

  4. All of the above.

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TLS Online TPP Program

#Question id: 3287

#Section 3: Genetics, Cellular and Molecular Biology

Which statement is not an assumption of the Hardy–Weinberg law?

a. The allelic frequencies (p and q) are equal.

b. The population is randomly mating.

c. The population is large.

d. Locus is di-allelic

TLS Online TPP Program

#Question id: 3288

#Section 3: Genetics, Cellular and Molecular Biology

Migration causes changes in the allelic frequency of a population by introducing alleles from other populations. The magnitude of change due to migration depends on

TLS Online TPP Program

#Question id: 3289

#Section 3: Genetics, Cellular and Molecular Biology

If, someday, an archaean cell is discovered whose SSU-rRNA sequence is more similar to that of humans than the sequence of mouse SSU-rRNA is to that of humans, the best explanation for this apparent discrepancy would be

TLS Online TPP Program

#Question id: 3290

#Section 3: Genetics, Cellular and Molecular Biology

Dog breeders maintain the purity of breeds by keeping dogs of different breeds apart when they are fertile. This kind of isolation is most similar to which of the following reproductive isolating mechanisms?

TLS Online TPP Program

#Question id: 3291

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is the most predictable outcome of increased gene flow between two populations?

TLS Online TPP Program

#Question id: 3292

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is correct observation?