Question

With your knowledge on base pairing, correctly work out the complementary strand for the given DNA molecules:

Answer 1

Please find the complementary pair of each DNA strand below.

1. CTT GTA GTC A

GAA CAT CAG T

2. GGC ATG CTT C

CCG TAC GAA G

3. GAC TTG GTT C

CTG AAC CAA G

4. CTG AAG TGG C

GAC TTC ACC G

Step-by-step explanation:

DNA is a double-stranded molecule i.e. it consists of two strands that are complementary to one another. According to the complementary base pairing rule, adenine base (A) will always hydrogen pair with Thymine base (T) i.e. A-T while Guanine base (G) will always hydrogen pair with Cytosine base (C) i.e. C-G.

Hence, based on the above explanation of complementary base pairing, the complementary pair of each DNA strand in this question are as follows;

N.B: They are numbered from left to right on the question

1. CTT GTA GTC A

GAA CAT CAG T

2. GGC ATG CTT C

CCG TAC GAA G

3. GAC TTG GTT C

CTG AAC CAA G

4. CTG AAG TGG C

GAC TTC ACC G