Molecular Basis of Inheritance · Question 77

Which of the following is required as inducer(s) for the expression of Lac operon?

1. lactose
2. lactose and galactose
3. glucose
4. galactose

A complex of ribosomes attached to a single strand of RNA is known as :

1. Polypeptide
2. Okazaki fragment
3. Polysome
4. Polymer

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

1. DNA – DNA hybridization
2. Polymerase chain reaction
3. Zinc finger analysis
4. Restriction enzymes

Taylor conducted the experiments to prove semiconservative mode of chromosome replication on

1. Vicia faba
2. Drosophila melanogaster
3. Vinca rosea
4. E. coli

The equivalent of a structural gene is -

1. cistron
2. recon
3. muton
4. operon

Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria ?

1. 5.8 S rRNA
2. 23 S rRNA
3. 18 S rRNA
4. 5 S rRNA

A molecule that can act as a genetic material must fulfill the traits given below, except

1. it should be able to express itself in the form of ‘Mendelian characters’
2. it should be unstable structurally and chemically
3. it should provide the scope for slow changes that are required for evolution
4. it should be able to generate its replica

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

1. coding strand
2. antistrand
3. template strand
4. alpha strand

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

Identify the correct order of organisation of genetic material from largest to smallest :

1. Chromosome, genome, nucleotide, gene
2. Genome, chromosome, nucleotide, gene
3. Genome, chromosome, gene, nucleotide
4. Chromosome, gene, genome, nucleotide