What is DNA?
• Deoxyribo-Nucleic Acid
• Long molecule made of different chemicals
called Adenine, Thymine, Guanine, and
Cytosine
A T
T A
G C
C C
C G
ATGCCTAAGTACCGTA
T T
A A
A
G
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What is DNA?
• Deoxyribo-Nucleic Acid
• Long molecule made of different chemicals
called Adenine, Thymine, Guanine, and
Cytosine
• Shaped like a twisted ladder
Career Spotlight!
– Double
HelixGeneticists
Molecular
study the structure of DNA
involved in different
diseases
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What does DNA do?
• Your DNA determines your PHENOTYPE
– Instruction book for your cells
My
DNA
• Each instruction is called a GENE
• Genes are the recipes for Proteins
• All your genes together is called your GENOME
• How your cells read your Genome depends in part
on your (and your cells’) environment
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Reading DNA
• PORFAVORNOHABLECUANDO
ESTOYHABLANDO.
• ATACGGGCTAGCCTGACGTCA
GTTTAAAAGCCCTG.
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Reading DNA
PUT A HAT ON YOUR HEAD
TGACGTAAAGCTTGACCTA
PUT A BAT ON YOUR HEAD
TGACATAAAGCTTGACCTA
•
Career
MUTATION!
Spotlight!
Genetic Counselors
figurein
outyour GENES
MUTATIONShelp
arepeople
changes
if they might pass a
that may be inherited
disease mutation to
their future
children
– Even small changes
in DNA
can have big effects
– Human DNA is ALL >99% identical!
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Where is DNA?
• DNA is found in the cells of every living
organism
– There are different types of cells
• Animal cells
DNA found in nucleus (Eukaryotic)
• Plant cells
• Bacteria cells - DNA floating loose (Prokaryotic)
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What color is DNA?
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