The final proof for DNA as the genetic material come from the experiments of 

1. Griffith

2. Hershey and chase 

3. Avery, Macleod and McCarty 

4.  Hargobind Khorana 

The association of histone H₁ with a nucleosome indicates 

1. transcription is occuring

2. DNA replication is occuring

3. the DNA is condensed into chromatin fibre

4. the DNA double helix is exposed

Which of the following RNAs should be most abundant in animals cell ?

(1) rRNA

(2) tRNA

(3) mRNA

(4) miRNA

Taylor conducted the experiments to prove semi-conservative mode of chromosome replication on

(1) Vinca rosea

(2) Vicia faba

(3) Drosophila melanogaster

(4) E. coli

The equivalent of a structural gene is

(1) muton

(2) cistron

(3) operon

(4) recon

Which of the following rRNAs act as structral RNA as well as ribozyme in bacteria ?

(1) 5 srRNA

(2) 18 srRNA

(3) 23 srRNA

 (4) 58 srRNA

DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the 

(1) template strand

(2) coding strand

(3) alpha strand

(4) anti strand

Which of the following is not required for any of the techniques of DNA fingerprinting available at present ?

(1) Zinc finger analysis

(2) Restriction enzymes

(3) DNA-DNA hybridisation

(4) Polymerase chain reaction

Which one of the following is the start codon?

(1) UGA

(2) UAA

(3) UAG

(4) AUG

Which one of the following is not applicable to RNA ?

1. Complementary base pairing

2. 5' phosphoryl and 3' hydroxyl ends

3. Heterocyclic nitrogenous bases

4. Chargaff's rule