Which of the following is the complimentary sequence of 5' TTAAGCTAC 3'?
5' GTACGCTTAA 3'
5' AATTCGCATG 3'
5' CATGCGAATT 3'
5' TTAAGCGTAC 3'
The complementary sequence of 5' TTAAGCTAC 3' is 3'AATTCGCATG 5'or 5' GTACGCTTAA 3'. Complementary sequence of 5'-3' end always proceeds from 3'- 5. In the double stranded DNA, the bases of one strand of DNA pairs with the bases of the second strand in such a way that Adenine (A) always pairs with Thiamine (T) and Cytosine (C) always pairs with Guanine (G). Ref: Harper Illustrated Biochemistry, 26th Edition, Chapter 35, Page 303 ; Lippincott's Illustrated Reviews: Biochemistry, 3rd Edition, Chapter 29, Page 395