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In a DNA double helix, a region along one DNA strand has this sequence of nitrogenous bases: TAGGCCT. What is the base sequence along the other strand of the molecule?

2007-10-27 10:11:45 · 4 answers · asked by Doc Holiday 1 in Science & Mathematics Biology

4 answers

ATCCGGA.
A DNA sequence or genetic sequence is a succession of letters representing the primary structure of a real or hypothetical DNA molecule or strand, with the capacity to carry information.

The possible letters are A, C, G, and T, representing the four nucleotide subunits of a DNA strand - adenine, cytosine, guanine, thymine bases covalently linked to phospho-backbone. In the typical case, the sequences are printed abutting one another without gaps, as in the sequence AAAGTCTGAC, going from 5' to 3' from left to right. A succession of any number of nucleotides greater than four is liable to be called a sequence. With regard to its biological function, which may depend on context, a sequence may be sense or anti-sense, and either coding or noncoding. DNA sequences can also contain "junk DNA."

2007-10-27 10:17:49 · answer #1 · answered by Sasuke 2 · 0 0

There are two possible answers to this question, depending on the directionality of the small sequence you provided

If your sequence is 5' TAGGCCT 3' - then the complimentary strand of the DNA would be 5' AGGCCTA 3'
It would basically look like this, lined up:

5' TAGGCCT 3'
3' ATCCGGA 5'

However, if the sequence you provided it 3' TAGGCCT 5', then your complimentary sequence would be 5'ATCCGGA 3'
It would look like this

3' TAGGCCT 5'
5' ATCCGGA 3'

Hope that helps you out.

2007-10-27 20:49:57 · answer #2 · answered by theviolet41 6 · 0 0

if the sequence you gave is 3'-5', the complementary strand is 5'-ATCCGGA-3'

2007-10-27 17:14:53 · answer #3 · answered by sdc_99 5 · 0 0

For the other strand of DNA it would be ATCCGGA
but if it were RNA it would be AUCCGGA

2007-10-27 17:44:49 · answer #4 · answered by Love_Life 2 · 0 0

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