Question

fill in the blank question
one of the strands of a dna molecule has the sequence 5-aagtg-3. remembering the rules of complementarity and the fact that the two strands in a dna molecule must run antiparallel to each other, you can determine that the other strand has the sequence 5-____ -3

Explanation:

Step1: Recall base - pairing rules

In DNA,腺嘌呤 (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C). Also, the strands are anti - parallel.

Step2: Write the complementary sequence

The given strand is 5'-AAGTG-3'. The complementary bases are TTCAC. Since the strands are anti - parallel, the 5' and 3' ends are reversed. So the complementary strand is 5'-CAC T T -3'.

Answer:

CAC T T