Will mark

you just finished learning about dna replication. you are looking at the portion of a dna strand of bacteria with a sequence of 5'-atgttcg-3'. what is the sequence of the complementary strand? what rule will you follow to make sure your answer is absolutely correct?

The answer to your question is  3'- TACAAGC -5'

Explanation:

Original strand              5' - ATGTTCG - 3'

Complementary strand = ?

Just remember Nitrogenous bases

Adenine     attach to Thymine                 Thymine attach to  Adenine

Guanine     attach to Cytosine                 Cytosine attach to Guanine

Then, the complementary sequence will be

                                   3'- TACAAGC -5'

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