Question

The sequence of nitrogenous bases in a segment of a coding strand of DNA is 5'-AATGCTAGGCAC-3'.

Choose the option that shows the correct sequence of nitrogenous bases in the mRNA transcribed by the DNA.

विकल्प

• 5'-UUACGAACCGAG-3'

• 5'-AAUGCUAGGCAC-3'

• 5'-UUACGUACCGUG-3'

• 5'-AACGUAGGCAGC-3'

Answer 1

5'-AAUGCUAGGCAC-3'

Explanation:

The given coding strand of DNA is 5'-AATGCTAGGCAC-3'. The template strand (complementary to the coding strand) would be 3'-TTACGATCCGTG-5'. mRNA is transcribed using the template strand, following base-pairing rules A → U, T → A, C → G, G → C. Therefore, the transcribed mRNA sequence (complementary to the template strand) will be 5'-AAUGCUAGGCAC-3'.