Help me match the words at the bottom with they definition

The definitions in the attachment is numbered accordingly as follows:

1. Electrophoresis

2. Polymerase Chain reaction

3. DNA probe

4. Chromosome

5. Restriction enzyme

Explanation:

1. Gel electrophoresis is a biological technique used to separate DNA fragments according to their size and charge using electric current passed through a gel matrix containing the samples.

2. Polymerase chain reaction, commonly known as PCR, is a molecular technique developed by Kary Mullis. It is used to make million copies i.e. amplify of a specific segment of DNA from a very small amount of DNA.

3. DNA probe

i think its white blood cells

i hope this