Question

give the complementary DNA strand for the following:
ATC GCT AAT
a ATC GCT AAT
b GCT ATC GGC
c TAG CGA TTA
d UAG CGA UUA

Answer 1

To find the complementary DNA strand for the sequence provided (ATC GCT AAT), we can substitute 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)

Let's apply this to the given sequence:

- A → T
- T → A
- C → G
- G → C
- C → G
- T → A
- A → T
- A → T
- T → A

So the complementary strand for ATC GCT AAT is:

**TAG CGA TTA**

Thus, the correct answer is **c) TAG CGA TTA**.