TLS Online TPP Program

#Question id: 11163


The reason that paralogous genes can diverge from each other within the same gene pool, whereas orthologous genes diverge only after gene pools are isolated from each other, is that

#Unit 9. Diversity of Life Forms
  1. having multiple copies of genes is essential for the occurrence of sympatric speciation in the wild.
  2. paralogous genes can occur only in diploid species; thus, they are absent from most prokaryotes.
  3. polyploidy is a necessary precondition for the occurrence of sympatric speciation in the wild.
  4. having an extra copy of a gene permits modifications to the copy without loss of the original gene product.
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TLS Online TPP Program

#Question id: 4501

#Unit 3. Fundamental Processes

According to Models of termination: torpedo and allosteric, which one is now the favored and why;

A. The Rat1 enzyme is very processive and quickly degrades the RNA in a 5’ -to-3’ direction, until it catches up to the still-transcribing polymerase from which the RNA is being spewed.

B. Termination depends on a conformational change in the elongating polymerase that reduces the processivity of the enzyme leading to spontaneous termination soon afterward.

TLS Online TPP Program

#Question id: 4502

#Unit 3. Fundamental Processes

Which one is the only GTF that is used by Pol I and Pol III as well as by Pol II, it has emerged recently that some of the other GTFs

TLS Online TPP Program

#Question id: 4503

#Unit 3. Fundamental Processes

Pol I transcribes the human rRNA genes, the promoter for the rRNA gene comprises two parts: the core element and the UCE (upstream control element), for initiation there are two factors-

TLS Online TPP Program

#Question id: 4504

#Unit 3. Fundamental Processes

What will be the molecular weight of poly(A) chain consisting of 100 residues, where weight of AMP is 500?

TLS Online TPP Program

#Question id: 4505

#Unit 3. Fundamental Processes

Symplekin protein is participats in which of the following processes;

TLS Online TPP Program

#Question id: 4506

#Unit 3. Fundamental Processes

Which process is very much similar to polyadenylation, because its takes place by the multiple protein complexes,