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  4. The sequence of an mRNA molecule produced from a DNA template strand with the composition 5'-AGCTACACT-3' is

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Q. The sequence of an mRNA molecule produced from a DNA template strand with the composition

5'-AGCTACACT-3' is

NTA AbhyasNTA Abhyas 2020Biomolecules

Solution:

The two stands of DNA are complementary to each other and the bases of one stand are paired with the bases of other strand by means of hydrogen bonding, i.e., A = T and $G\equiv C$ . But uracil (U) instead of thymine (T) is present in case of RNA. Thus, the sequence of base on m-RNA molecule is

DNA strand 5'-AGCTACACT-3'

m-RNA 5'-UCGAUGUCA-3'