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

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 able to generate its replica

(3) it should be unstable structurally and chemically

(4) it should provide the scope for slow changes that are required for evolution

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

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

(1) Chromosome, gene, genome, nucleotide

(2) Genome, chromosome, nucleotide, gene

(3) Genome, chromosome, gene, nucleotide

(4) Chromosome, genome, nucleotide, gene

In sea urchin DNA, which is double stranded 17% of the bases were shown to be

cytosine. The percentages of the other three bases expected to be present in this DNA

are

1. G/34%, A/24.5%, T/24.5%

2. G/17%, A/16.5%, T/32.5%

3. G/17%, A/33%, T/33%

4. G/8.5%, A/50%, T/24.5%

Select the correct option