Dna Fingerprinting Research Paper

Dna Fingerprinting Research Paper-31
We add a blue dye to the DNA fragments using a pipette, and use a pipette to move the blue DNA liquid from a colourless tube into the “well” – little hole – in the gel (see the top picture on the next page).We use a blue dye to see where we have added the DNA on the gel – it’s just for our benefit so we don’t add two different DNA samples in the same hole!The DNA is stored, dissolved in essentially water, in a small plastic tube and kept in a fridge until ready for the next stage.

We add a blue dye to the DNA fragments using a pipette, and use a pipette to move the blue DNA liquid from a colourless tube into the “well” – little hole – in the gel (see the top picture on the next page).We use a blue dye to see where we have added the DNA on the gel – it’s just for our benefit so we don’t add two different DNA samples in the same hole!The DNA is stored, dissolved in essentially water, in a small plastic tube and kept in a fridge until ready for the next stage.

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Other letters do nothing at all and are just “spacer” or “junk” DNA.

The DNA is a double helix, with the letters facing each other and paired up, so that “A” matches with “T” on the other strand, and “C” matches with “G” on the other strand.

The first step in DNA fingerprinting is getting your DNA in a pure form.

Technical improvements, including a number of additional DNA probes and various DNA fragment detection methods, have since been published.

With the recent advent of the PCR technique (Polymerase Chain Reaction) and PCR-based methods like RAPD (Random Amplified Polymorphic DNA), DNA fingerprinting has widened its applicability and attracted a growing number of scientists.

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