Question

Part of a certain DNA sequence is G-G-T-C-T-A-T-A-C. What is the complementary sequence?

Short answer

C-C-A-G-A-T-T-A-T-G is a complementary sequence.

Step-by-step solution

The complementary sequence of DNA

Every DNA consists of nucleobases paired in complementary sequences. They are fundamental units of the genetic code. There are five known nucleobases, and they are named as follows:

1) Guanine-represented with G

2) Adenine-represented with A

3) Cytosine-represented with C

4) Thymine-represented with T

5) Uracil -represented with U

6) Uracil is only found in RNA and will not be further mentioned.

Explanation

According to the rules of nucleobase pairing, we know that Adenine (A) always pairs with Thymine (T), and Cytosine (C) always pairs with Guanine (G).

So for our given sequence of G-G-T C-T-A-A-C, the complementary sequence will be C-C-A-G-A-T-T-A-T-G

Hence C-C-A-G-A-T-T-A-T-G is a complementary sequence.