Q28-3P - Organic Chemistry (Mcmurry)

Question

What sequence of bases on one strand of DNA is complementary to the following sequence on another strand?

(5’) GGCTAATCCGT (3’)

Step-by-Step Solution

Answer

The complementary structure of one strand of DNA can be written as:

(3’) CCGATTAGGCA (5’) or (5’) ACGGATTAGCC (3’)

Definition of Biopolymers

The Biopolymers are made up of nucleotides joined to form long chains. Every nucleotide comprises a nucleoside with a phosphate bond. 

Explanation for drawing the strand

The formation of A and G will form complementary pairs with the T and C in this sequence type. The sequence can be replaced as A by T, T by A, G by C, and C by G. The (5’) end at one end of the left and another end (3’) at the right in the original strand. The complementary strand is interchanged on the left (3’), and it will become (5’) at the right. The complement strand is as follows:

(3’) CCGATTAGGCA (5’) or (5’) ACGGATTAGCC (3’)