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DNA Identification

DNA Identification. Where does DNA come from? 1/2 from mom 1/2 from dad What is it? “Blue print” of life How is DNA different among us? Common vs Different What does “DNA” mean? Deoxyribonucleic Acid. Cell. Where can DNA be found?. Cell Types. Blood. Hair Roots. Saliva. SAME.

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DNA Identification

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  1. DNA Identification • Where does DNA come from? • 1/2 from mom • 1/2 from dad • What is it? • “Blue print” of life • How is DNA different among us? • Common vs Different • What does “DNA” mean? • Deoxyribonucleic Acid

  2. Cell Where can DNA be found? Cell Types Blood Hair Roots Saliva SAME Sweat Semen Various Tissue

  3. Types of objects where DNA may be found • Blood Stains • Semen Stains • Chewing Gum • Stamps & Envelopes • Penile Swabs • Sweaty Clothing • Bone • Hair • Fingernail Scrapings • Saliva

  4. Nucleus Where is DNA in the body? Cell

  5. Where types of DNA are found in a cell? Cell Mitochondrial DNA Nuclear DNA

  6. Nucleus Paternal Chromosome Maternal Chromosome Where is DNA in the body?

  7. Chromosome DNA Where is DNA in the body?

  8. Double Helix A T C G DNA- What it looks like Units A =Adenine T =Thymine G =Guanine C =Cytosine

  9. 4 5 TCTA AGAT TCTA AGAT TCTA TCTA AGAT TCTA AGAT 7 6 AGAT TCTA AGAT TCTA AGAT TCTA TCTA AGAT TCTA TCTA AGAT STR Short Tandem Repeat AGAT DNA Profile =4,6 TCTA DNA Profile =5,7

  10. DENATURE A A T T G C G C A A T T T A T A A T A T G G C C Heat Step one of a single cycle

  11. ANNEAL A A G T G A T T C A C A A T T T T T C Step two of a single cycle

  12. T G G A C A T T G A G T A A G T G A A T G A T A T A T T C T A T C C T EXTEND Step three of a single cycle

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