Unit 4 DNA Evidence Study Guide

Front

Why is DNA Fingerprinting called a 'fingerprint'?

Back

Everyone's finger fingerprint is unique, just as everyone's DNA Fingerprint is unique.

Front

What is the first step to making a DNA Fingerprint? Options: Make millions of copies of the DNA, Cut the DNA into different sized pieces, Separate the DNA pieces by size, Compare DNA fingerprints, find a match

Back

Cut the DNA into different sized pieces

Front

What is the second step to making a DNA Fingerprint?

Back

Make millions of copies of the DNA

Front

What is the third step to making a DNA Fingerprint?

Back

Separate the DNA pieces by size

Front

Three tools are used to make a DNA fingerprint - which one is like scissors that cuts DNA at a particular sequence? Options: PCR Machine, Restriction Enzyme, DNA Ligase, Gel Electrophoresis machine

Back

Restriction Enzyme

Front

Three tools are used to make a DNA fingerprint - which one is like a biological copy machine, making thousands of copies of each piece of DNA?

Back

PCR Machine

Front

Three tools are used to make a DNA fingerprint - which one separates pieces of DNA by size? Options: PCR Machine, Restriction Enzyme, DNA Ligase, Gel Electrophoresis machine

Back

Gel Electrophoresis machine

Front

Why do DNA pieces move from the top of the Gel towards the bottom?

Back

there is an electric charge in the gel, (-) at the top, which repels the (-) DNA molecules

Front

During the Cut step, why would your DNA be cut into different sized pieces than your neighbor's DNA?

Back

Your DNA has a different sequence than your neighbor's.

Front

When DNA segments are being separated by size, what happens to the strands? Options: the small strands stay near the top, the big ones move to the bottom, the big strands stay near the top, the little ones move to the bottom, the small strands move to the middle, and the big ones move to the sides, the big strands move to the middle, and the small ones move to the sides

Back

the big strands stay near the top, the little ones move to the bottom