Question

Which DNA sequence would be complementary to the following sequence TCTA?

A. AGAT
B. AGAU
C. TCTA
D. ATCT

Answer 1

A. AGAT

Step-by-step explanation:

Remember these are the nitrogenous base pairs:

Adenine (A) and Thymine (T)

Cytosine (C) and Guanine (G)

So in TCTA

The T would change to A

The C would change to G

The T would change to A

The A would change to T

And we would get AGAT

Therefore the answer is A