Gene Cloning and Plasmid Functions

This video tutorial covers the topic of gene cloning, a key aspect of genetic engineering. It explains the five main steps involved in gene cloning: construction of recombinant DNA, introduction into a host, multiplication, cell division, and selection. The video also discusses the role of plasmids as cloning vectors and the essential components they must possess, such as selectable markers, multiple cloning sites, and origins of replication.

What is the primary focus of gene cloning in genetic engineering?

• To study animal behavior

• To replicate DNA sequences

• To create new species

• To enhance plant growth

Which molecule is used as a vector in the construction of recombinant DNA?

• Circular DNA

• Protein

• Lipid

• RNA

What is one method used to introduce recombinant DNA into a host cell?

• Electroporation

• Photosynthesis

• Osmosis

• Fermentation

What happens to recombinant DNA once it is inside the host cell?

• It degrades

• It multiplies

• It changes color

• It becomes inactive

During cell division, what is formed from the host cell?

• A different species

• A mutated cell

• A clone of identical host cells

• A single large cell

How is the presence of recombinant DNA molecules confirmed?

• By checking pH levels

• By observing color change

• By using antibiotics

• By measuring temperature

What is a plasmid in the context of gene cloning?

• A circular DNA molecule

• A lipid structure

• A carbohydrate

• A type of protein

Which component of a plasmid allows it to multiply independently within a cell?

• Origin of replication

• Multiple cloning site

• Antibiotic resistance gene

• Selectable marker

What role do restriction endonucleases play in gene cloning?

• They cut and ligate DNA

• They transport DNA

• They synthesize DNA

• They degrade DNA

Which of the following is an example of a selectable marker in plasmids?

• Glucose

• Tetracycline resistance gene

• Water

• Chlorophyll