Which one of the following is not a correct match ?

Options

A. a) Tumour inducing - Ti plasmid
B. b) DNA probe - Identifies the desired DNA fragment
C. c) PCR - DNA staining
D. d) Agarose - Sea weeds

Answer

To determine which of the following matches is not correct, we will analyze each option one by one.

1. **A: Tumor inducing Ti plasmid**
- The Ti plasmid (tumor-inducing plasmid) is a well-known plasmid from the bacterium Agrobacterium tumefaciens that induces tumors in plants. This is a correct match.

2. **B: DNA probe identifies the desired DNA fragment**
- A DNA probe is a fragment of DNA that is used to detect the presence of complementary sequences by hybridization. This means it can identify specific DNA fragments. This is also a correct match.

3. **C: PCR DNA staining**
- PCR (Polymerase Chain Reaction) is a technique used to amplify specific DNA sequences. It does not involve staining DNA; rather, it is a method for making many copies of a particular DNA segment. Therefore, this is an incorrect match.

4. **D: Agarose seaweed**
- Agarose is a gel-like substance derived from seaweed and is commonly used in gel electrophoresis to separate DNA fragments. This is a correct match.

After analyzing all options, we find that the incorrect match is:

**Answer: C (PCR DNA staining)**

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