Question

Which is the complementary mRNA strand from the following DNA template?

TTC AGC

(1 point)
Responses

AAG UCG
AAG UCG

CCT GAT
CCT GAT

CCU GAU
CCU GAU

AAG TCG

Answer 1

To determine the complementary mRNA strand from the given DNA template strand, we first need to transcribe the DNA nucleotides into RNA nucleotides.

The DNA template strand is:
TTC AGC

When transcribing from DNA to RNA:
- Adenine (A) in DNA pairs with Uracil (U) in RNA.
- Thymine (T) in DNA pairs with Adenine (A) in RNA.
- Cytosine (C) in DNA pairs with Guanine (G) in RNA.
- Guanine (G) in DNA pairs with Cytosine (C) in RNA.

Now, let's transcribe the given template strand:

1. T (DNA) ➔ A (RNA)
2. T (DNA) ➔ A (RNA)
3. C (DNA) ➔ G (RNA)

4. A (DNA) ➔ U (RNA)
5. G (DNA) ➔ C (RNA)
6. C (DNA) ➔ G (RNA)

Putting it together, the corresponding mRNA sequence will be:
AAG UCG

Therefore, the correct answer is:
**AAG UCG**