Assume that two strands of DNA have been separated and that the base sequence on one strand is TTGC. What is the sequence of bases on the complimentary strand? a CGTT b AACG c GTAC d GCTA

Answer 1

To find the complementary strand of DNA for the sequence TTGC, you need to pair the bases according to the following rules:

• Adenine (A) pairs with Thymine (T)
• Thymine (T) pairs with Adenine (A)
• Cytosine (C) pairs with Guanine (G)
• Guanine (G) pairs with Cytosine (C)

Given the sequence TTGC:

• T pairs with A
• T pairs with A
• G pairs with C
• C pairs with G

So, the complementary strand would be AACG.

Thus, the correct answer is b AACG.