If the sequence of one chain of DNA is 5 AGCTTG 3 the comple

If the sequence of one chain of DNA is 5\' AGCTTG 3\', the complementary strand is:

a. 5\' TCGAAC 3\'

b. 5\' CAAGCT 3\'

c. 5\' UCGAAC 3\'

d. 5\' CAAGCU 3\'

Solution

DNA is Deoxyribonucleic acid, hereditary material in humans. The main constitutents of DNA are Phosphate group, a ribose sugar and 4 nitrogeneous bases- Adenine, Guanine, Cytosine and Thymine. The Adenine base pairs with Thymine, Cytosine base pairs with Guanine. So,

DNA STRAND: 5^\'- AGCTTG- 3^\'

COMPLEMENTARY STRAND: 3^\'- TCGAAC- 5^\'

So, the answer is option A.