Final answer:
The complementary sequence for the given DNA sequence is 3′−gctataactcgattcgtta−5′.
Step-by-step explanation:
The complementary sequence for the given DNA sequence, 5′−cgatattgagctaagctt−3′, in order from 3' to 5' is 3′−gctataactcgattcgtta−5′. To find the complementary sequence, we need to match each individual nucleotide with its complementary base. In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).