Question

Which nitrogen base sequence is the partner of T-C-A-G-C-A?

a) A-A-C-G-A-C-T
b) C-A-G-A-T-G
c) A-G-T-C-G-T
d) T-C-A-G-C-A

Answer 1

The partner sequence to T-C-A-G-C-A, according to the base pairing rules of DNA, is A-G-T-C-G-T, which makes option (c) the correct answer.

Step-by-step explanation:

The nitrogen base sequence that is the partner of T-C-A-G-C-A can be determined by knowing the base pairing rules in DNA. The four nucleotide bases are adenine (A), cytosine (C), guanine (G), and thymine (T). These bases pair up with each other, with A pairing with T, and C pairing with G. Following this rule:

• T (thymine) pairs with A (adenine)
• C (cytosine) pairs with G (guanine)
• A (adenine) pairs with T (thymine)
• G (guanine) pairs with C (cytosine)
• C (cytosine) pairs with G (guanine)
• A (adenine) pairs with T (thymine)

Thus, the complementary sequence to T-C-A-G-C-A is A-G-T-C-G-T. Therefore, the correct answer is option (c).