Gel Electrophoresis and DNA

Front

Based on these results whose blood was found in the blood stain at the crime scene? Options: Bob, Sue, John, Lisa

Back

John

Front

Which two bear species are most closely related? Options: Bear 1 and Bear 2, Bear 1 and Bear 3, Bear 2 and Bear 3, There’s no way to tell

Back

Bear 1 and Bear 3

Front

Which suspect is likely guilty? Suspect #1, Suspect #2, Suspect #3

Back

Suspect #2

Front

DNA fingerprinting works because: No two people, except identical twins, have exactly the same DNA

Back

No two people, except identical twins, have exactly the same DNA

Front

DNA is recovered from a suspected dead soldier. Which Parents are the likely parents of the soldier?

Back

Parents C and D

Front

What is the purpose of gel electrophoresis?

Back

separates DNA based on size

Front

Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

Back

DNA is negatively charged so attracted to the positive end of the unit.

Front

In gel electrophoresis, the largest DNA fragment will appear

Back

closest to the starting wells

Front

Which is the primary purpose of using restriction enzymes in gel electrophoresis?

Back

It allows the strands of DNA to be cut into various lengths for testing.

Front

The parents of a new baby believe they brought the wrong child home from the hospital. Gel electrophoresis was performed using DNA samples from the parents and the child. A section of the gel electrophoresis results is shown below. Which conclusion is valid based on the gel electrophoresis results?

Back

They have the correct child, because her genetic information came from both parents.