Question

Consider the following DNA template strand: ATC CAG ATG AAC AGC AAT Which is the correct complementary mRNA strand? (1 point) Responses UAG GUC UAC UUG UCG UUA UAG GUC UAC UUG UCG UUA TAG GTC TAC TTG TCG TTA TAG GTC TAC TTG TCG TTA ATC CAG ATG AAC AGC AAT ATC CAG ATG AAC AGC AAT UAG GAC UAC CUG UCG GGA UAG GAC UAC CUG UCG GGA

Answer 1

To determine the correct complementary mRNA strand from the given DNA template strand (ATC CAG ATG AAC AGC AAT), we must first remember that during transcription, the base pairing rules change slightly. In RNA, adenine (A) pairs with uracil (U) instead of thymine (T), while cytosine (C) pairs with guanine (G) and vice versa.

Here's how the transcription from the DNA template strand to mRNA occurs:

- DNA template: A T C C A G A T G A A C A G C A A T
- mRNA results: U A G G U C U A C U U G U C G U U A

Thus, the resulting mRNA strand is:

**UAG GUC UAC UUG UCG UUA**

Among the responses provided in your question, **"UAG GUC UAC UUG UCG UUA"** is the correct complementary mRNA strand.