Question

What is gene "knock out"?

Hint:

Remember: Gene knockout = Gene inactivated to study its function.

Answer 1

Concept: Gene knockout is an important technique in molecular biology and genetic engineering used to study gene function.
Step 1: Definition.
Gene knockout is a genetic technique in which a specific gene in an organism is deliberately inactivated or "knocked out" so that it no longer produces its functional product.
Step 2: Methodology.

• The target gene is disrupted or replaced using recombinant DNA technology.
• Techniques such as homologous recombination or CRISPR-Cas9 are commonly used.

Step 3: Purpose.

• To understand the function of a particular gene
• To study the effect of gene absence on an organism
• To model human diseases in animals (e.g., knockout mice)

Step 4: Applications.

• Medical research (disease modeling)
• Drug development
• Functional genomics

Step 5: Conclusion.
Thus, gene knockout is a powerful tool used to investigate gene function and its role in biological processes.