Which one of the following also acts as a catalyst in a bacterial cell?

1.  sn RNA

2.  hn RNA

3.  23 S rRNA

4.  5 S rRNA

Satellite DNA is a useful tool in:
1. Organ transplantation
2. Sex determination
3. Forensic science
4. Genetic engineering

Which one of the following does not follow the central dogma of molecular biology?

1. Pea

2. Mucor

3. Chlamydomonas

4. HIV

Point mutation involves:

1. insertion

2. change in single base pair

3. duplication 

4. deletion

Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a triplet?
1. Nirenberg and Matthaei
2. Hershey and Chase
3. Morgan and Sturtevant
4. Beadle and Tatum

Telomere repetitive DNA sequences control the function of eukaryotic chromosomes because they:

1. act as replicons

2. are RNA transcription initiators

3. help chromosome pairing

4. prevent chromosome loss

Which one of the following pairs of nitrogenous bases of nucleic acids is wrongly matched with the category mentioned against it?

1. Thymine, Uracil - Pyrimidines
2. Uracil, Cytosine - Pyrimidines
3. Guanine, Adenine - Purines
4. Adenine, Thymine - Purines

The length of the DNA molecule greatly exceeds the dimensions of the nucleus in eukaryotic cells. How is this DNA accommodated?

1. Deletion of non-essential genes

2. Super-coiling in nucleosomes

3. DNAse digestion

4. Through the elimination of repetitive DNA

The Okazaki fragments in DNA chain growth: