The experimental proof for semiconservative replication of DNA was first shown in a

• Fungus

• Bacterium

• Virus

• Plant

Which of the following pairs is wrongly matched?

• Starch synthesis in pea: Multiple alleles

• ABO blood grouping: Co-dominance

• T.H. Morgan: Linkage

• XO type sex determination: Grasshopper
  
  

253.

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

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