DNA or RNA segment tagged with a radioactive molecule is called:

1.	vector	2.	probe
3.	clone	4.	plasmid

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

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

1. Neurosporacrassa

2. Salmonella typhimurium

3. Escherichia coli

4. Diplococcuspneumonia

One gene – one enzyme hypothesis was postulated by:

1. R. Franklin

2. Hershey and Chase

3. A. Garrod

4. Beadle and Tatum

Match the enzyme in column I with its function in column II and choose the correct option. 

1. A-2 B-1 C-4 D-3

2. A-3 B-2 C-1 D-4

3. A-3 B-4 C-1 D-2

4. A-1 B-2 C-4 D-3

Probes, used in DNA fingerprinting, are initially:

1. Single stranded RNA

2. Mini-satellite

3. 19 base long oligonucleotide

4. All of the above

Satellite DNA is a useful tool in:

1. Organ transplantation

2. Sex determination

3. Forensic science

4. Genetic engineering

Allelic sequence variation where more than one variant allele at a locus in. a human population with a frequency greater than 0.01 is referred to as:

1. DNA polymorphism

2. Multiple allelism

3. SNP

4. EST

The codon for anticodon 3'-UUUA-5' is:

1. 3'-AAU-5'

2. 5'-UAAA-3'

3. 5'-AAAU-3'

4. 3'-UAAU-5'

The Okazaki fragments in DNA chain growth: