Learning Objectives Learn the Base Pairs of DNA

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Presentation transcript:

Learning Objectives Learn the Base Pairs of DNA Know the monomers of DNA Learn what a Codon is Learn the Base Pairs of RNA Learn the major differences between DNA and RNA

Genetics How to Read DNA A T C G C T A G G C T A G C G A T C C G DNA has Base Pairs that always go together A = T and G C

A = T and G C Try again: DNA has Base Pairs that always go together T T G C G A C G G A T A C A A A C G C T G C C T A T G T DNA has Base Pairs that always go together A = T and G C

Deoxyribose Nucleic Acid: a double chain polymer of nucleic acids (nucleotides) that is passed from parents to children in ALL LIFE Monomer Polymer Nucleotides DNA and RNA Nucleotides: there a 5 types of nucleic acids Adenine (A) Thymine (T) Uracil (U) Guanine (G) Cytosine (C ) (RNA only)

A = T and G C Base Pairs 2 Hydrogen Bonds 3 Hydrogen Bonds Adenine (A) always pairs with Thymine (T) 2 H-bonds Guanine (G) always pairs with Cytosine (C) 3 H-bonds

2 H-Bonds 3 H-Bonds

3 H-Bonds 2 H-Bonds

A = T and G C

Codon: Every 3 bases on a single DNA strand is called a “DNA Codon” (this will be very important later for us) T A G C G A T C C Codon

Ribose Nucleic Acid: a single chain polymer of nucleic acids (nucleotides) so it has only 1 strand not 2 DNA RNA

RNA DNA A = U G C A = T G C Ex: T A C Ex: A U G Has 1 strand, no helix Has 2 strands, double helix Base Pairs: A = T G C A = U G C Use Uracil instead of Thymine Every 3 bases = DNA Codon Ex: T A C Every 3 bases= RNA Codon Ex: A U G

RNA can bind to single DNA strand DNA Codon DNA C G A T G G A T A C A G C U A C C U A U G U RNA RNA Codon

RNA can bind to single DNA strand TRY AGAIN DNA Codon DNA G A T A C A A T A C A C U A C G U U A U G U RNA RNA Codon End