Base Pairing Rules:
* Adenine (A) pairs with Thymine (T)
* Guanine (G) pairs with Cytosine (C)
Complementary Strand:
Starting with your sequence: TCG GAC CAT CGA
The complementary strand would be:
AGC CTG GTA GCT
Explanation:
* T (thymine) in the original sequence pairs with A (adenine) in the complementary strand.
* C (cytosine) in the original sequence pairs with G (guanine) in the complementary strand.
* G (guanine) in the original sequence pairs with C (cytosine) in the complementary strand.
* A (adenine) in the original sequence pairs with T (thymine) in the complementary strand.
Let me know if you have any other DNA sequence questions!
