Bioninja Biotechnology

What is the purpose of gene knockout in scientific research?

• To make a gene inoperative to study its function

• To enhance the function of a gene

• To introduce new genes into an organism

• To increase the expression of a gene

Explain how the CRISPR-Cas9 system functions as a gene knockout mechanism in bacteria.

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Understanding

Which organisms are commonly used as model organisms for gene knockout studies due to their genetic similarity to humans?

• Mice

• Rats

• Fruit flies

• Zebrafish

Describe the role of guide RNA (gRNA) in the CRISPR-Cas9 system.

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Understanding

What are some applications of gene editing via the CRISPR-Cas9 system in agriculture?

• Improving nutritional content

• Increasing photosynthetic efficiency

• Enhancing resistance to environmental stresses

• All of the above

Discuss the significance of conserved sequences in evolutionary biology.

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Understanding

What are the two hypotheses that account for the presence of conserved or highly conserved gene sequences?

• Essential functional requirement and slower mutation rate

• Random genetic drift and natural selection

• Gene duplication and horizontal gene transfer

• Epigenetic modifications and gene silencing