Answer:
3'-GCTATAACTCGATTCGAA-5'
Explanation:
The DNA is a macromolecule formed by two strands of polynucleotides forming a double helix.
These chains are composed of monomers called nucleotides, there are 4 different types in DNA, called nitrogenous bases: two purines, guanine (G) and adenine (A) and two pyrimidines, thymine (T) and cytosine (C). They are joined by covalent bonds in each chain.
These bases are complementary: G with C, and A with T between the two strands by hydrogen bonds making the double-stranded DNA molecule.
A sequence 5'-CGAT-3' is equivalent to a sequence written 3'-ATCG-5' , because the 5' and 3' notation defines the direction of reading. If one strand is noted 5' to 3', then the complementary strand will be from 3' to 5' in the same sense.
So, all we need to do is write the complementary bases from the 3' end to 5':
5'-CGATATTGAGCTAAGCTT-3'
3'-GCTATAACTCGATTCGAA-5' (answer)
The complementary strand of 5−CGATATTGAGCTAAGCTT−3′ is
3'-GCTATAACTCGATTCGAA-5'
A part of one nucleic acid chain is often bonded to another by a sequence of base pairs. The DNA is composed of macromolecule characterized by two strands of polynucleotides often called a double helix.
The sequence of a complementary strand can be gotten when one has sequence of the template strand.
The two strands are said to complement each other.
The Adenine always pair with Thymine while the Guanine always pair with cytosine held together by hydrogen bonds.
Conclusively, the 4 nitrogenous bases which are guanine (G) and adenine (A), thymine (T) and cytosine (C), are held together by strong covalent bond.
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