TLS Online TPP Program

#Question id: 4715


Claytonia virginica is a woodland spring herb with flowers that vary from white, to pale pink, to bright pink. Slugs prefer to eat pink-flowering over white-flowering plants (due to chemical differences between the two), and plants experiencing severe herbivory are more likely to die. The bees that pollinate this plant also prefer pink to white flowers, so that Claytonia with pink flowers have greater relative fruit set than Claytonia with white flowers. A researcher observes that the percentage of different flower colors remains stable in the study population from year to year. Given no other information, if the researcher removes all slugs from the study population, what do you expect to happen to the distribution of flower colors in the population over time?

#Unit 11. Evolution and Behavior
  1. The percentage of pink flowers should increase over time.

  2. The percentage of white flowers should increase over time.

  3. The distribution of flower colors should not change.

  4. The distribution of flower colors should randomly fluctuate over time.

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TLS Online TPP Program

#Question id: 4687

#Unit 3. Fundamental Processes

Multiplicity of infection (moi) is a measure of how many phage particles infect a given bacterial cell within a population?

a) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysis

b) If the number of phage particles is two or more, it is more likely to produce lysis

c) If the average number is one or fewer phage particles per cell, the infection is more likely to result in lysogney

d) If the number of phage particles is two or more, it is more likely to produce lysogney

which of the following is the correct prediction of moi measurement?

TLS Online TPP Program

#Question id: 4689

#Unit 3. Fundamental Processes

Cleavage liberates precursors of rRNAs and tRNA Cleavage at the points that is carried out by the enzymes excepts

TLS Online TPP Program

#Question id: 4690

#Unit 3. Fundamental Processes

Which of the following  of the cleavage enzymes of rRNAs and tRNA is a ribozyme?

TLS Online TPP Program

#Question id: 4691

#Unit 3. Fundamental Processes

Processing of pre-rRNA transcripts (30S)  in bacteria, after the modification and cleavage produces mature RNAs is

TLS Online TPP Program

#Question id: 4692

#Unit 3. Fundamental Processes

most common nucleoside modifications in eukaryotic rRNAs such as methylation, pseudouridine formation, and other modifications is carried by

TLS Online TPP Program

#Question id: 4693

#Unit 3. Fundamental Processes

The function of snoRNAs in guiding rRNA modification by two types of sequences or boxes

Statement-I   C/D box of snoRNAs to guide methylation reactions

Statement-II  H/ACA box of snoRNAs to guide dihydrouridylylations