To find the complementary mRNA strand for the given DNA strand, you need to replace each DNA base with its complementary RNA base:
- A (adenine) pairs with U (uracil) in RNA
- T (thymine) pairs with A (adenine)
- C (cytosine) pairs with G (guanine)
- G (guanine) pairs with C (cytosine)
Given the DNA strand: ACC GTT AAT
The complementary mRNA strand would be created as follows:
- A → U
- C → G
- C → G
- (space)
- G → C
- T → A
- T → A
- (space)
- A → U
- A → U
- T → A
So, the complementary mRNA strand is: UGG CAA UUA.
Thus, the correct response is:
UGG CAA UUA.