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Question: Answered & Verified by Expert
If the DNA strand undergoing transcription has a following base pair sequence. What would be the sequence of mRNA formed from this strand?

3' GAT CTT AGC GGG AAT TCG 5'
BiologyMolecular Basis of InheritanceNEET
Options:
  • A 5' GAU CUU AGC GGG AAU UCG 3'
  • B 5' CAU GAA UGC CCC UUA AGC 3'
  • C 5' CUA GAA UCG CCC UUA AGC 3'
  • D 3' CUA GAA UGG CCC UUA AGC 5'
Solution:
2531 Upvotes Verified Answer
The correct answer is: 5' CUA GAA UCG CCC UUA AGC 3'
Protein synthesis is the process of manufacturing protein from DNA involving two steps - transcription and translation. Transcription is the process of making mRNA from the DNA and this mRNA is translated into a long chain polypeptide with help of ribosome and tRNA.

The strand of NDA from which the new mRNA is synthesized is called as template strand or non-coding or anti-sense strand. It is in the 3' 5' direction. The mRNA is synthesized on it in the 5' 3' with the help of RNA polymerase enzyme which leads in the same direction.

The new mRNA sequence transcribed from the DNA sequence - 3' GAT CTT AGC GGG AAT TCG 5' will be 5' CUA GAA UCG CCC UUA AGC 3'

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