The DNA molecule takes a complete turn after

1.  Every base pair

2.  Every five base pairs

3.  Every ten base pairs

4.  Every two base pairs

Genes are made up of

1. Histone

2. A portion of DNA

3. Hydrocarbons

4. Lipoproteins

A codon consists of three nitrogenous bases and there are four kind of bases in nucleic acid altogether. How many codons will be there?

1. 60

2. 4³

3. 34

4. 46

The discontinuously synthesised fragments are joined later by

1. DNA polymerase III

2. DNA ligase

3. DNA gyrase

4. DNA polymerase I

In eukaryotes, the replication of DNA takes place

1. at S-phase of the cell cycle

2. before G2 and after G1phase of the cell cycle

3. at M phase

4. Both a and b

If cell division wouldn't occur after DNA replication then the cell will have

1.  chromosomal aberration

2. polyploidy

3. chromosomal anomaly

4.  Both b and c

Which of the following is not true for RNA Polymerase?

1. It binds to promoter for initiation of transcription

2. template dependent mode of action

3. It follows the rule of complementarity

4. It uses nucleotide triphosphate as substrate

In which of the following process nucleic acid is not copied to nucleic acid

1. Transcription

2. Replication

3. Translation

4. All of the above

Which of the following is not true statement?

1. In translation, the transfer of genetic information from a polymer of nucleotides to a polymer of amino acids takes place.

2. complementarity exist between nucleotide sequences and amino acids sequences.

3. The basis for transcription and replication is complementarity.

4. A change in nucleic acid is responsible for change in amino acid

codons are generated by 4 nitrogenous bases using laws of

1. Probability

2. Number system

3. Permutation and combination

4. Binomial theorem