A scientist isolated DNA from a particular bacterium and decided to analyze it. The sequence of the bacterial DNA is ATGGGCTAGTCTT. What will the complementary strand be?

A.
TACCCGATCAGTTA
B.
TACCCGATCAGAA
C.
TACCCGAGGCGAA
D.
TACAAGATCAGAA

1 answer

The complementary strand of DNA is formed by pairing each nucleotide with its complementary base. In DNA, adenine pairs with thymine, and guanine pairs with cytosine.

The given bacterial DNA sequence is ATGGGCTAGTCTT. To find the complementary strand, we need to determine the base pairing for each nucleotide.

A --> T
T --> A
G --> C
C --> G

Therefore, the complementary strand of the given bacterial DNA sequence is TACCCGATCAGAA.

The correct answer is option D.