TLS Online TPP Program

#Question id: 4129


Which of the following statements about the tRNA that normally accepts phenylalanine is false?  (mRNA codons for phenylalanine are UUU and UUC.)

#Part-A Aptitude & General Biotechnology
  1. It interacts specificially with the Phe synthetase.

  2. It will accept only the amino acid phenylalanine.

  3. Its molecular weight is about 25,000.

  4. The tRNA must contain the sequence UUU.

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TLS Online TPP Program

#Question id: 18958

#Part-A Aptitude & General Biotechnology

The number of clones to represent this fragment in genomic library with a probability of 95% are

TLS Online TPP Program

#Question id: 18959

#Part-A Aptitude & General Biotechnology

 Vectors used for construction of genomic libraries, and their capacity is given match them correctly

A- λ EMBL seriesI - 300kb - 1,400 kb
B - CosmidsII - 45 kb
C - BACs and YACs (high capacity vectors)III - 20kb

TLS Online TPP Program

#Question id: 18960

#Part-A Aptitude & General Biotechnology

cDNA library do not require very large vectors hence which of the following is commonly used in cDNA library

TLS Online TPP Program

#Question id: 18961

#Part-A Aptitude & General Biotechnology

When a cDNA library is generated by first removing those mRNA or cDNA sequences that are common to two sources, e.g., two different Cell types, such a library is called 

TLS Online TPP Program

#Question id: 18962

#Part-A Aptitude & General Biotechnology

1. Presence of oncogenes (iaaM, iaaH and ipt) in T-DNA,

2. Their large size makes the handling procedures during cloning tedious and cumbersome

3. A general lack of unique cloning sites within the T-DNA, which are needed for the insertion of DNA segments to be cloned.

These three problems have been resolved by deleting 

TLS Online TPP Program

#Question id: 18964

#Part-A Aptitude & General Biotechnology

Size of agrobacterium can be reduced by binary vector formation; these binary vectors can be formed by phenomenon of