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DNA Sequence

Genetics as it applies to evolution, molecular biology, and medical aspects.

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DNA Sequence

Postby bionewbie » Thu Jun 09, 2005 2:49 am

Hi, I am not very good at biology so I don't know how to answer this question. I was wondering if anyone may please explain to me the answer to this problem. Thanks!

Question:
If the DNA sequence is 5'TACAGA3', then the complementary mRNA sequence is?
A) 3'UCUAUG5'
B) 3'TACAGA5'
C) 3'AUGUCU5'
D) 3'UACAGA5'
E) 3'ATGTCT5'
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Postby mith » Thu Jun 09, 2005 4:30 am

the mRNA sequence is the complement to the base pairs of the DNA strand. Look up the complements
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Postby Poison » Thu Jun 09, 2005 6:43 pm

A-----T ( U, in RNA)
G-----C
I'm sure you can find the answer yourself.
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Re: DNA Sequence

Postby neuro5 » Tue Jun 21, 2005 10:03 pm

T goes to A, and A to T. C goes to G, and G to C.

bionewbie wrote:Hi, I am not very good at biology so I don't know how to answer this question. I was wondering if anyone may please explain to me the answer to this problem. Thanks!

Question:
If the DNA sequence is 5'TACAGA3', then the complementary mRNA sequence is?
A) 3'UCUAUG5'
B) 3'TACAGA5'
C) 3'AUGUCU5'
D) 3'UACAGA5'
E) 3'ATGTCT5'
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Postby victor » Wed Jun 22, 2005 7:24 am

Um..do we know that it's the sense chain from the question?? what if that is the antisense??
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Re: DNA Sequence

Postby Poison » Wed Jun 22, 2005 4:13 pm

neuro5 wrote:T goes to A, and A to T. C goes to G, and G to C.

Don't forget, we are talking about RNA. I mean U is the complementer of A.
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Postby MrMistery » Wed Jun 22, 2005 5:18 pm

@victor
Just take a look at the options. They all start with 3 :D :D
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Postby saintaditya » Sun Jun 26, 2005 2:09 pm

hey just complement every thing the correct answer according to me is C
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