Question

the sticky end of the dna restriction fragment shown here will pair with a dna restriction fragment with the sticky end
-acgt
-gtac
-acgu
-aaaaa

Explanation:

Step1: Recall DNA base - pairing rules

In DNA, adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

Step2: Analyze the given sticky end

The given sticky end has the sequence \( -ACGT \).

Step3: Find the complementary sequence

For the sequence \( -ACGT \), the complementary bases are:

• A pairs with T
• C pairs with G
• G pairs with C
• T pairs with A

So the complementary sequence is \( -ACGT \) (since \( A - T \), \( C - G \), \( G - C \), \( T - A \) gives the reverse - complement in terms of base - pairing for the single - stranded sticky end).

Answer:

\(-ACGT\)