DNA STRUCTURE

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• The finger print that is inside your body!

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DNA Molecule

• Discovered in 1953

Watson Crick
Currently lives in Cold Spring Harbor, Long
Island, NY
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Every living thing has DNA.
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You and I have approximately 10 trillion cells
About 200 different types of cells
Other types Bone cells Pancreatic
Cells Cartilage cells Hepatocytes (Liver
Cells) Muscle cells Rods Cones (Eye Cells)
etc
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In each cell we have 46 chromosomes
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TWO TYPES OF CHROMOSOMES
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Each chromosome has a strand of DNA that is about
6.5 feet long
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So if you were to stretch out all the DNA found
in you it would circle the earth
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So if you were to stretch out all the DNA found
in you it would circle the earth
about 188,000 times !!
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DNA stands forD DeoxyriboseN NucleicA Acid
DNA is too small to see, but under a microscope
it looks like a twisted up ladder! (The Double
Helix)
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Deciphering DNA's structure.

• There are 4 different bases in a DNA molecule

ADENINE A
THYMINE T
GUANINE G
CYTOSINE C
They connect to each other in a certain special
way
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