What will be the sequence of mRNA produced by the following stretch of DNA? 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' in coding strand.
What will be the sequence of mRNA produced by the following stretch of DNA? 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' in coding strand.
The correct option is C 3’ GUUAACCGAU 5’
The correct option is C.
Explanation of the correct option:
- The act of copying information from a strand of DNA into a fresh messenger RNA molecule is called transcription (mRNA).
- DNA preserves genetic material as a reference or template safely and permanently in the cell nuclei.
- The DNA strand with the polarity 3′ → 5′ acts as a template for RNA polymerase during transcription.
- The other DNA strand which has the polarity 5′ → 3′ is known as the coding strand and has the same sequence as RNA except for thymine, which is replaced by uracil in RNA.
Explanation of the incorrect options:
Option A:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 5’ AUCGGUUAAC 3’.
Option B:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 3’ GUUAAGGCAU 5’.
Option D:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 5’ UAGCCUUAAC 5’.
Final answer: The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 3’ GUUAACCGAU 5’.
3’ GUUAACCGAU 5’
The correct option is C.
Explanation of the correct option:
- The act of copying information from a strand of DNA into a fresh messenger RNA molecule is called transcription (mRNA).
- DNA preserves genetic material as a reference or template safely and permanently in the cell nuclei.
- The DNA strand with the polarity 3′ → 5′ acts as a template for RNA polymerase during transcription.
- The other DNA strand which has the polarity 5′ → 3′ is known as the coding strand and has the same sequence as RNA except for thymine, which is replaced by uracil in RNA.
Explanation of the incorrect options:
Option A:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 5’ AUCGGUUAAC 3’.
Option B:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 3’ GUUAAGGCAU 5’.
Option D:
The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 5’ UAGCCUUAAC 5’.
Final answer: The sequence of mRNA produced by 3' ATCGGTTAAC 5' template strand, 5' TAGCCAATTG 3' stretch of DNA in coding strand will be 3’ GUUAACCGAU 5’.
