If a strand of dna has the nitrogen base sequence

Asked by admin @ 02/08/2021 in Biology viewed by 297 People

If a strand of DNA has the nitrogen base sequence 5'-ATTTGC-3', what will be the sequence of the matching strand?

Answered by admin @ 02/08/2021

The nitrogen base sequence of a DNA is

5'-ATTTGC-3' .

The sequence of the matching strand i.e. complementary strand is

3'-TAAACG-5'

$\huge \text{Explaination }$

✴If one strand of the DNA is in 5' prime then the complementary strand is always in 3' prime direction.

✴We must know that pairing of DNA bases. A purine on one strand always pairs with the pyrimidine on the other strand.

✴To be clear, Adenine (A) always pairs with Thymine(T) with 2 H-bonds while Guanine (G)always pairs with Cytosine (C) with three hydrogen bonds...This means the both the strands are joined by or bound by hydrogen bonds.

✴Here, Adenine and Guanine are Purines while Thymine and Cytosine are Pyrimidine.

This is how the Nitrogen bases on the complementary strand can be given.

If a strand of dna has the nitrogen base sequence

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