DNA

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DNA
The fingerprint thats inside your body!!!!!!
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DNA
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Fun DNA Facts!
DNA is too small to see, but under a microscope
it looks like a twisted up ladder!
DNA stands forD DeoxyriboseN NucleicA Acid
Every living thing has DNA. That means that you
have something in common with a zebra, a tree, a
mushroom and a beetle!!!!
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DNA is made up of steps and rails of a ladder.
This is a rail
This is a step
Green can only go with Red
Blue can only go with Yellow
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You can tell people apart by their fingerprints
Because everyones fingerprints are different!
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DNA is like a fingerprint because everyones is a
little different!
How does the police look at DNA to figure out who
committed a crime?
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STEP 1
The DNA gets cut up by special scissors!!!
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The scissors can only cut the same colour!
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STEP 2
All of the cut up pieces of DNA are different
sizes.
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STEP 3
A special machine sorts the DNA by size.
(Little pieces are fast, so they move faster to
the bottom.)
BIG
TOP
LITTLE
BOTTOM
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We are ALL a little bit different!
Mr. Stanleys DNA
BIG
LITTLE
Mr. Phillips DNA
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Soooo. How do we tell people apart just by
their DNA anyways???
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Our DNA has different sizes of pieces so it makes
a different pattern when its all cut up.
Mr. Stanleys DNA
Mr. Phillips DNA
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Mr. Stanley
Mr. Phillips
This is what it really looks like!!!
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Can you guess which one is Mr. Stanley and which
one is Mr. Phillips?
Mr. Stanley
Mr. Phillips
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Is the red box around Mr. Stanleys DNA or around
Mr. Phillips DNA?
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• Cytosine is always linked with Guanine 
• Adenine is always linked with Thymine
• A adenine blue
• T thymine yellow
• G guanine red
• C cytosine green