Question

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

O A-C-G-A-C-T

O C-A-G-A-T-G

O A-G-T-C-G-T

OT-C-A-G-C-A

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Answer 1

The complementary DNA sequence to T-C-A-G-C-A is A-G-T-C-G-T because in DNA, adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G).

Step-by-step explanation:

The nitrogen base sequence that is the partner of T-C-A-G-C-A must follow the rules of complementary base pairing, where adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). Given this logic, the complementary sequence is A-G-T-C-G-T. When forming the complementary sequence, we must look at each nitrogen base in the original sequence and identify its counterpart; for example, T pairs with A, C pairs with G, A pairs with T, and so on.

Answer 2

Adenine pairs with Thymine and Cytosine with Guanine. Thus : A-G-T-C-G-T is the correct answer.

Step-by-step explanation:

According to Watson and Crick DNA base pairing, purine bind to the pyrimidine base whereas each purine binds to a particular type of pyrimidine.

Like adenine (A) binds with thymine (T) and guanine (G) binds with cytosine (C) in a DNA molecule.

Since, the given sequence is T-C-A-G-C-A, therefore, its nitrogen base sequence is A-G-T-C-G-T.