Mama Ji's molecular kitchen
Written by: Guruatma "Ji" Khalsa

Welcome to Mama Ji's Molecular Kitchen!

There are lots of sites out there full of molecular techniques and protocols, but very little information (either online or in readable hardcopy form) that explain how and why these techniques work. That's where this site comes in.

I've written in simple terms about a number of commonly used molecular techniques, explaining what they are and how they work. So bookmark this site and read it the next time a professor or colleague describes something in technical jargon you can't understand, or when a high-profile court trial makes molecular sciences an interest to the general public.


Prep & Purification


Visualization, Detection & Quantitation



DNA Techniques

Alkaline Lysis


Agarose Gel


Southern Blot

Restriction Enzymes



RNA Techniques


Northern Blot



Protein Techniques



Western Blot

Radio-Immune Precipitation


Use the chart above to find a subject and click away. If you have any suggestions for improvements or would like to see a technique added, please use the Feedback form on Ask A Biologist.

About the author: Guruatma "Ji" Khalsa created this cookbook as part of her M.N.S. degree at Arizona State University. It has been used by thousands of people around the world and has become one of the popular areas to visit on the Ask A Biologist website.

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Bibliographic details:

  • Article: Mama Ji's Molecular Kitchen
  • Author(s): Guruatma "Ji" Khalsa
  • Publisher: Arizona State University School of Life Sciences Ask A Biologist
  • Site name: ASU - Ask A Biologist
  • Date published: April 2, 2010
  • Date accessed: May 21, 2024
  • Link:

APA Style

Guruatma "Ji" Khalsa. (2010, April 02). Mama Ji's Molecular Kitchen. ASU - Ask A Biologist. Retrieved May 21, 2024 from

American Psychological Association. For more info, see

Chicago Manual of Style

Guruatma "Ji" Khalsa. "Mama Ji's Molecular Kitchen". ASU - Ask A Biologist. 02 April, 2010.

MLA 2017 Style

Guruatma "Ji" Khalsa. "Mama Ji's Molecular Kitchen". ASU - Ask A Biologist. 02 Apr 2010. ASU - Ask A Biologist, Web. 21 May 2024.

Modern Language Association, 7th Ed. For more info, see
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