DNA

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DNA

• Cassandra Peck

http//rosenblumtv.files.wordpress.com/2007/08/01-
coll-dna-knoll-l.jpg
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Set

• Can you roll your tongue?
• Do you have the hitch hiker thumb?
• Are you double jointed?
• Why do we look like our parents?
• DNA!

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Objectives for Today!

• The learner will construct a strand of DNA using
  the sequence provided. The learner will also
  demonstrate how to match the base pairs that will
  be provided.

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Purpose!

• The purpose of this lesson is to introduce the
  basic properties of DNA and to learn how a DNA
  sequence and its complementary strand are read.

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What is DNA?

• DNA Dideoxyribonucleic Acid
• DNA is made up of three parts
• Phosphate group
• Deoxyribose group
• Sugar
• Base (A,T,G,C,)
• Nitrogen Base

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Formation of Nucleosides
http//whyfiles.org/034clone/images/dna_molecule.g
if
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Do you know what this is?
http//www.sciencemuseum.org.uk/exhibitions/lifecy
cle/images/1-2-6-3-1-2-1-0-0-0-0.jpg
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DNA A,T,G, C

• AAdenine
• TThymine
• A-T (2 H-Bonds)
• GGuanine
• CCytosine
• G-C (3 H-bonds)

http//academic.brooklyn.cuny.edu/biology/bio4fv/p
age/molecular20biology/dsDNA.jpg
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Can you read DNA?

• YES!
• Example of a DNA sequence
• ATACAATTCCGTAATCGCGAGCT
• TATGTTAAGGCATTAGCGCTCGA (Comp. Strand)
• TGACGATCGATAAGGTACGATATC
• What would its complementary strand look like?

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Study DNA by Playing with FOOD!

• Using the packet, construct your own DNA using
  the given sequence to find the complementary
  sequence
• Follow the directions on the worksheet carefully

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Candy DNA
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Fast track!!!!!!

• What are the four bases used in DNA?
• What is the structure of DNA called?
• What does DNA stand for?
• HOMEWORK
• Practice sequencing examples
• Next class would be a genetics lesson, on what
  happens if the DNA does not fold properly.