Name the nitrogen bases of DNA.

Sometimes a change at the third nitrogen base of a codon has no effect on protein synthesis. Explain.

If the sequence of nitrogen bases of the coding strand of dNa in a transcription unit is: 5' A T G A A T G - 3'. The sequence of bases in its RNA transcript would be,

Name the following Model of DNA proposed by Watson and Crick.

In the RNA molecule, which nitrogen base is found in the place of thymine?

Name any two strong bases.

Draw the structure of nitrogen bases in nucleic acid.

Explain why codons are always triplets of nitrogen bases.

Name the process involved in DNA fragmentation.

In the RNA molecule , which nitrogen base is found in place of thymine ?

The addition or deletion of one nitrogen base from a sequence of codons on mRNA has more serious effects than its substitution. Explain with an example.