PBS

In gel electrophoresis, the largest DNA fragment will appear

• closest to the starting wells

• farthest from the starting wells

• three quarters away from the starting wells

• it depends on how many fragments there are

How many fragments resulted from the cut above?

• 1

• 2

• 3

• 4

How many restriction sites appear in the picture?

• 1

• 2

• 3

• 4

This process produces millions of copies of a DNA sequence from a small amount of DNA.

• Amplification

• PCR (Polymerase Chain Reaction)

• DNA Digestion

• Transcription

Check all the places from where you can collect DNA.

• Red Blood Cells

• Clothing

• Bone

• Hair with a follicle

• Body Fluids

This laboratory procedure is known as

• CLONING

• gel electrophoresis

• chromatography

• use of a dichotomous key

Why do bacteria have restriction enzymes?

• To prevent being infected by viruses

• To help DNA get into the cell

• To be able to grow in an incubator

• They don't - viruses have restriction enzymes

Tags

NGSS.HS-LS4-4

What charge is DNA?

• positive

• negative

• neutral

During gel electrophoresis, DNA moves from the ___ end to the ___ end.

• positive, negative

• negative, positive

Which restriction enzyme listed below was isolated from E.coli bacteria?

• AluI

• HindIII

• HaeII

• EcoRI