To determine the correct complementary mRNA strand for the given DNA template strand, we need to remember that mRNA is synthesized based on the rules of complementary base pairing, where adenine (A) pairs with uracil (U) in RNA (instead of thymine (T) in DNA), and cytosine (C) pairs with guanine (G).
Given the DNA template strand:
ATC CAG ATG AAC AGC AAT
The complementary mRNA sequence can be derived as follows:
- A (from DNA) pairs with U (in mRNA)
- T (from DNA) pairs with A (in mRNA)
- C (from DNA) pairs with G (in mRNA)
- G (from DNA) pairs with C (in mRNA)
Now, we can convert the DNA template strand to the mRNA sequence:
- DNA: ATC → mRNA: UAG
- DNA: CAG → mRNA: GUC
- DNA: ATG → mRNA: UAC
- DNA: AAC → mRNA: UUG
- DNA: AGC → mRNA: UCG
- DNA: AAT → mRNA: UUA
Therefore, the complete mRNA sequence is:
UAG GUC UAC UUG UCG UUA
So the correct complementary mRNA strand is:
UAG GUC UAC UUG UCG UUA
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