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 Multiple Choice QuestionsMultiple Choice Questions


hnRNA undergoes two additional processes. Out of them in one process an unusual nucleotide (methyl GPT) is added to the 5' end of the molecule. What would you call this?

  • Tailing

  • Splicing

  • Termination

  • Capping


Variation in gene frequencies within a population can occur by chance rather than by natural selection. This is referred to as

  • Genetic flow

  • Genetic drift

  • Random mating

  • Genetic load


Which of the following DNA sequences qualifies to be designated as a palindrome?

  • 5'-GACCAG'3 in one strand

  • 3'GACCAG-5' in one strand

  • 5-GACGAG-3', 3'-CIGGIC-5'

  • 5'-AGCGCT-3', 3'-TCGCGA-5'



Munch hypothesis is based on

  • Translocation of food due to Turgor Pressure (TP) gradient and imbibition force

  • Translocation of food due to Turgor Pressure (TP) gradient

  • Translocation of food due to imbition force

  • None of the above


Translocation of food due to Turgor Pressure (TP) gradient

Munch hypothesis is based on the movement of phloem sap along a turgor pressure gradient. The mass flow of organic solutes takes place from the site of higher concentration, (source) to the site of lower concentration (sink).


Biolistic technique is used in

  • Gene transfer process

  • Tissue culture process

  • Hybridisation process

  • Germplasm conservation process


Genetic material found in Human Immunodeficiency Virus (HIV) is

  • Double stranded RNA

  • Single stranded RNA

  • Double stranded DNA

  • Single stranded DNA


DNA replication occurs in

  • G1-phase

  • S-phase

  • G2-phase

  • M-phase


 The vector for T-DNA is

  • Thermus aquaticus

  • Salmonella typhimurium

  •  Agrobacterium tumefaciens

  • Escherichia coli


Viroids have

  • ssRNA not enclosed by a protein coat

  • ssDNA not enclosed by a protein coat

  • dsDNA enclosed by a protein coat

  •  dsRNA enclosed by protein coat


Probes, used in DNA fingerprinting, are initially

  • Single-stranded RNA

  • Mini-satellite

  • 19base long oligonucleotide

  •  All of the above