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:

The two polynucleotide chains in DNA are:

1. parallel

2. discontinuous

3. antiparallel

4. semiconservative

One gene-one enzyme relationship was established for the first time in:

1. Neurosporacrassa

2. Salmonella typhimurium

3. Escherichia coli

4. Diplococcuspneumonia

A sequential expression of a set of human genes occurs when a steroid molecule binds to the:

1. transfer RNA

2. messenger RNA

3. DNA sequence

4. ribosome

Which antibiotic inhibits the interaction between t-RNA and m-RNA using bacterial protein synthesis?

1. Erythromycin

2. Neomycin

3. Streptomycin

4. Tetracycline

One gene – one enzyme hypothesis was postulated by:

1. R. Franklin

2. Hershey and Chase

3. A. Garrod

4. Beadle and Tatum

Antiparallel strands of a DNA molecule mean that: