Genetics and Biotechnology: Understanding Through Guppies

What was the narrator's initial misconception about genetics?

• Only the dominant traits are passed to offspring

• Traits are blended from both parents

• Genetic traits skip a generation

• Genes are not important in determining traits

Tags

NGSS.HS-LS3-1

What unique feature do guppies have compared to many other fish?

• They lay a large number of eggs

• They have live births

• They are saltwater fish

• They can fly short distances

What is gel electrophoresis primarily used for?

• To increase the size of DNA molecules

• To observe living cells under a microscope

• To separate DNA molecules based on size

• To change the genetic makeup of an organism

What charges do DNA molecules carry that affect their movement in gel electrophoresis?

• Neutral

• No charge

• Positive

• Negative

What is the purpose of using restriction enzymes in gel electrophoresis?

• To make DNA visible under UV light

• To join different DNA segments

• To duplicate DNA segments

• To cut DNA at specific sites

How do longer DNA pieces move compared to shorter ones in gel electrophoresis?

• Faster than shorter pieces

• Slower than shorter pieces

• At the same speed as shorter pieces

• Do not move at all

What can DNA bands in gel electrophoresis indicate about guppies?

• Genetic relationships

• Health condition

• Size of the guppies

• Age of the guppies

What additional tool is mentioned that helps estimate the size of DNA fragments?

• DNA ruler

• DNA ladder

• DNA measure

• DNA scaler

What is one application of gel electrophoresis outside of criminal investigations?

• Classifying different species

• Enhancing plant growth

• Determining nutritional content

• Predicting weather patterns

Why is gel electrophoresis important in crime scene investigations?

• It can identify the age of the suspect

• It helps in reconstructing the crime scene

• It can compare DNA samples for a match

• It predicts the time of the crime