TLS Online TPP Program

#Question id: 4726


Which of the following is incorrect regards genomic imprinting?

#Part-A Aptitude & General Biotechnology
  1. Certain mutations showing lethality if the mutant gene is derived from one parent, but that same mutant gene has no deleterious effects if inherited from the other parent

  2. Genes on autosomal chromosomes that are more readily expressed in one sex

  3. Transgenic male passes an imprinted gene to his offspring, they express the gene; but, when his daughter transmits the same gene to her offspring, they don’t express it

  4. Genes whose expression is affected by the sex of the transmitting parent

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TLS Online TPP Program

#Question id: 795

#Part-B Specialized Branches in Biotechnology

A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand,

TLS Online TPP Program

#Question id: 797

#Part-B Specialized Branches in Biotechnology

With respect to microRNAs, which, if any, of the following statements, is FALSE?)

A. MicroRNA genes often occur in gene clusters within introns of protein-coding genes and are usually transcribed by RNA polymerase II.

B. Like an mRNA a miRNA is initially produced as a larger precursor RNA that, like the great majority of mRNAs, usually has a 5’ cap and a poly(A) tail.

C. MicroRNAs are produced by germ-line cells only.

D. A miRNA is initially produced as a duplex RNA but in order to work it needs to be converted into a single-strand RNA.

E. MicroRNAs usually work as transcription factors.

TLS Online TPP Program

#Question id: 799

#Part-B Specialized Branches in Biotechnology

The two cleavage reactions required to generate the miRNA from these primary transcripts are mediated by two distinct RNases. A characteristic of both these enzymes is that they recognize and cleave RNAs on the basis of the structure of their substrates rather than their specific sequence. Which of the following statement is INCORRECT regarding the cleavage reactions that produces a mature RNA?

TLS Online TPP Program

#Question id: 801

#Part-B Specialized Branches in Biotechnology

Identify the type of DNA from the structures given below and match the correct form with its characteristics described.

TLS Online TPP Program

#Question id: 803

#Part-B Specialized Branches in Biotechnology

A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand to form a B-DNA structure,

TLS Online TPP Program

#Question id: 810

#Part-A Aptitude & General Biotechnology

Which of the following statements concerning the process of spontaneous folding of proteins is false?