Question

The sequence that controls the copy number of linked DNA in the vector is termed:

• A. Selectable marker
• B. Ori site
• C. Palindromic sequence
• D. Recognition site

Hint:

Ori = Copy number control; Marker = Selection; Recognition = Cutting.

Answer 1

The Correct Option is B

Step 1: Ori (origin of replication) is a DNA sequence where replication starts.
Step 2: In genetic engineering, Ori determines how many copies of the inserted DNA will be made inside the host cell.
Step 3: Selectable marker identifies transformed cells, not replication.
\[ \Rightarrow \boxed{\text{Correct answer: (B) Ori site}} \]