Final answer:
The DNA sequence that was transcribed to produce the RNA segment AACGCUAUU is TTGCGATAA, following the base pairing rules where RNA's adenine (A) pairs with DNA's thymine (T), and RNA's cytosine (C) pairs with DNA's guanine (G).
Step-by-step explanation:
The student has asked from which DNA sequence the RNA segment with the base sequence of AACGCUAUU was transcribed. To find this out, we need to understand the basics of transcription. During transcription, an enzyme called RNA polymerase reads the DNA strand and creates a complementary RNA strand. The RNA bases are complementary to the DNA bases with adenine (A) pairing with uracil (U) in RNA instead of thymine (T) in DNA, and cytosine (C) pairing with guanine (G). Therefore, the DNA sequence that has been transcribed to produce the RNA segment AACGCUAUU would be TTGCGAT AA.