To find the complementary DNA strand for the sequence given (ATC GCT AAT), we need to match each nucleotide with its complementary base:
- A (adenine) pairs with T (thymine)
- T (thymine) pairs with A (adenine)
- C (cytosine) pairs with G (guanine)
- G (guanine) pairs with C (cytosine)
So, for the DNA strand ATC GCT AAT, the complementary strand will be:
- A → T
- T → A
- C → G
- G → C
- C → G
- T → A
- A → T
- A → T
- T → A
This means the complementary strand would be TAG CGA TTA.
So, the correct response is: TAG CGA TTA
As for your question about brown eyes, it seems to be cut off. If you provide more detail or context for Question 15, I'd be happy to help!