DNA Analysis and Gel Electrophoresis

The video tutorial explores genetic engineering and biotechnology, covering topics like DNA profiling, PCR, and gel electrophoresis. It discusses the applications of these technologies in crime investigations and paternity tests, highlighting the role of DNA in identifying individuals. The tutorial also touches on the potential future advancements in biotechnology and encourages viewers to think critically about the implications of these technologies.

Which of the following is NOT a component of DNA?

• Adenine

• Thymine

• Cytosine

• Uranium

What is a common use of DNA profiling?

• Designing computer software

• Identifying criminals

• Building bridges

• Predicting weather patterns

What does PCR stand for in the context of DNA analysis?

• Protein Cell Reaction

• Polymerase Cell Reaction

• Protein Chain Reaction

• Polymerase Chain Reaction

What is the main purpose of PCR in DNA analysis?

• To color DNA samples

• To destroy DNA samples

• To shrink DNA samples

• To amplify DNA samples

In gel electrophoresis, what determines how far DNA fragments move?

• Their temperature

• Their color

• Their size and charge

• Their age

What is the role of restriction enzymes in gel electrophoresis?

• To color DNA

• To heat DNA

• To amplify DNA

• To cut DNA into fragments

What is the charge of DNA that causes it to move in gel electrophoresis?

• Positive

• Negative

• Neutral

• Variable

How can gel electrophoresis be used in paternity testing?

• By changing the color of DNA

• By heating the DNA

• By measuring the weight of DNA

• By matching DNA bands between child and parents

What is the significance of ethidium bromide in gel electrophoresis?

• It heats DNA

• It cuts DNA

• It makes DNA visible under UV light

• It amplifies DNA

What can be concluded if a child's DNA band does not match either parent in a gel electrophoresis test?

• One of the parents is not biological

• The child is adopted

• The child is a twin

• The test is faulty