DNA Electrophoresis – Questions & Solutions (Solved)

DNA Electrophoresis – Questions & Solutions (Solved)

What is the only way you would not have a completely unique set of DNA?
Right Ans - If you had an identical twin

What does gel electrophoresis do? Right Ans - Seperates DNA molecules on
the basis of size

What cuts the DNA into fragments? Right Ans - Restriction enzymes

How many regions does DNA fingerprinting usually compare? Right Ans - 5
regions

Is DNA fingerprinting considered reliable for identification purposes? Right
Ans - Yes, becuase the more regions of DNA are studied the less likely there is
to be a person with the same DNA fingerprint

What is the electrical current used for? Right Ans - Used to move the DNA
fragments across the gel

The charge of the backbone in a DNA strand is...? Right Ans - Negative

What end does the DNA start on? Right Ans - Negative end

The smaller the fragments the... Right Ans - Farther it moves away from the
negative charge

The gel is a... Right Ans - Polysaccharide matrix that "catches" the
molecules

What is gel stained with so that you can see the DNA molecules that resolved
into bands? Right Ans - Ethidium bromide

Gel electrophoresis is a technique used for Right Ans - Seperating
molecules by base pair