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Choose the Best Answer · Q21

Q.If one strand of the DNA has the sequence ‘ATGCTTGA’, then the sequence of complementary strand would be

a) TACGAACT
b) TCCGAACT
c) TACGTACT
d) TACGRAGT
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Step 1. Recall the complementary base-pairing rule established in §14.5.2: adenine (A) always pairs with thymine (T), and guanine (G) always pairs with cytosine (C).

Step 2. Apply this rule to each base of the given strand 'A-T-G-C-T-T-G-A' in order: A→T, T→A, G→C, C→G, T→A, T→A, G→C, A→T. …

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