Question
Given the DNA sequence 5’ CCTAGAA 3’, the complementary strand would read:
Answer: Option A
:
A
Adenine (A) and guanine (G) are the purines, while thymine (T) and cytosine (C) are the pyrimidines in DNA. A purine always pairs up with a pyrimidine. A and T form a pair, and so do G and C. A base on one DNA strand would form a base pair with its respective counterpart in the complementary strand. The two DNA strands would also run in opposite directions; one of them would be in the 5’-->3’ direction, while the complementary strand would run in the 3’-->5’ direction.
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:
A
Adenine (A) and guanine (G) are the purines, while thymine (T) and cytosine (C) are the pyrimidines in DNA. A purine always pairs up with a pyrimidine. A and T form a pair, and so do G and C. A base on one DNA strand would form a base pair with its respective counterpart in the complementary strand. The two DNA strands would also run in opposite directions; one of them would be in the 5’-->3’ direction, while the complementary strand would run in the 3’-->5’ direction.
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