Question

DNA sequence of a one strand of a gene to be transcribed is:

3’ — AGTCCGATGGGCT GA — 5’

the sequence of the MRNA is:

3’ — AGUCCGAUGGGCTGA — 5’

the sequence of the DNA strand shown above is that of the:

a. template strand

b. coding strand

Answer 1

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Here the DNA strand sequence given is a b.) Coding strand.

After transcription the mRNA formed is always complementary to template strand and similar to coding strand except T is replaced by U.

Here both DNA and mRNA strand are similar so the DNA strand is of coding strand.

( NOTE:- There is misprint in the mRNA strand, from the 5' end third base pair is T which is not possible in RNA. RNA never have T as its base pair.)

I hope my answer will be of some help to you.

Thank you.