To identify the DNA segment from which the section of mRNA was transcribed, you need to perform a process called transcription, where the mRNA is synthesized from the DNA template strand. During transcription, the mRNA molecule is complementary to the DNA coding (non-template) strand.
Since there is no T base in the provided section of mRNA, we can deduce that the complementary DNA segment would contain an A base instead. Therefore, the DNA segment from which this section of mRNA was transcribed would be:
TGA ACG
MRNA section
UGA UUG
Identify the DNA segment from which this section of mRNA was transcribed.
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