AP (Advanced Placement) Biology: Questions 1 of 868

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MCQ▾

Which one of the following is the complementary sequence of 5′ TTAAGCGTAC 3′?

Choices

Choice (5) Response

a.

5’ GTACGCTTAA 3’

b.

3’ TTAAGCGTAC 3’

c.

3’ CATGCGAATT 5’

d.

5’ AATTCGCATG 3’

e.

All of the above

Answer

a.

Explanation

5’ GTACGCTTAA 3’is the complementary sequence of 5’ TTAAGCGTAC 3’.

The complementary sequence to G-T-A-C is C-A-T-G.

A double-stranded DNA or RNA strand consists of two complementary strands of base pairs, which are non-covalently connected via two or three hydrogen bonds.

The complementary sequence of 5’ TTAAGCTAC 3’ is 3’AATTCGATG 5’ or

5’ GTACGCTTAA 3’.

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