Question

Consider the following DNA template strand:

ATC CAG ATG AAC AGC AAT

Which is the correct complementary mRNA strand?
(1 point)
Responses

ATC CAG ATG AAC AGC AAT
ATC CAG ATG AAC AGC AAT
TAG GTC TAC TTG TCG TTA
TAG GTC TAC TTG TCG TTA
UAG GUC UAC UUG UCG UUA
UAG GUC UAC UUG UCG UUA
UAG GAC UAC CUG UCG GGA

Answer 1

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:

1. DNA: ATC → mRNA: UAG
2. DNA: CAG → mRNA: GUC
3. DNA: ATG → mRNA: UAC
4. DNA: AAC → mRNA: UUG
5. DNA: AGC → mRNA: UCG
6. 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**