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Types of Hydrogen Bonding

If one strand...

Question

If one strand of DNA has the sequence ATGCTTGA, the sequence in the complementary strand would be:

A

TCCGAACT

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B

TACGTAGT

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C

TACGAATC

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D

TACGAACT

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Solution

The correct option is D TACGAACT
The base pairs on one strand of the DNA bind with the base pairs of the other strand specifically. A always pairs with T with two hydrogen bonds and G always pairs with C with three hydrogen bonds. So if one strand is ATGCTTGA then the complementary strand will be TACGAACT.

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