DNA and Gel Electrophoresis

3.3.1 Gel Electrophoresis & DNA Fingerprinting

Genetics

Open Ended

Warm Up- what do you think Gel Electrophoresis could be used for in a real world scenario?

Multiple Choice

Before doing gel electrophoresis, the DNA to be test must be cut into different sized fragments by:

• DNA Ligase

• DNA Polymerase

• Restriction Enzymes

• Primase

Multiple Choice

When running a gel electrophoresis, larger pieces of DNA travel ____________distances while smaller pieces of DNA travel ____________distances

• Longer; Shorter

• Shorter; Longer

Multiple Choice

DNA is ___________ charged

• negatively

• positively

Multiple Choice

What is the purpose of gel electrophoresis?

• to make extra copies of chromosomes

• to inject DNA into a clone

• to cut DNA into fragments

• to separate DNA fragments by size

Multiple Choice

Which specific characteristic of DNA allows geneticists to identify people using DNA fingerprinting?

• The shape of the DNA molecule is unique to every person.

• The nucleotide sequence is unique to every person.

• The number of chromosomes is unique to every person.

• The size of each chromosome is unique to every person.