DNA: Structure, Replication, and Genetic Disorders

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Explore the intricate world of DNA, covering topics such as deoxyribose sugar, nucleic bases, DNA replication, causes of mutations, genetic disorders like Down syndrome, and genetic engineering techniques like recombinant DNA production. Learn about the importance of base pairing, chromosome arrangement, and the effects of environmental factors on gene expression.

  • DNA Structure
  • Genetic Disorders
  • DNA Replication
  • Recombinant DNA
  • Genetic Engineering
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Presentation Transcript

  1. D: Deoxyribose (Sugar) N: Nucleic (Base) A: Acid (Phosphate Group) Base Pairing: G-C A-T https://www.youtube.com/watch?v=OiiF VSvLfGE

  2. DNA Replication - RNA https://www.youtube.com/watch?v=5qSr meiWsuc

  3. Environment can switch genes on or off . Examples: Rabbit, Child

  4. Source of VARIATION (difference, change in DNA)

  5. Causes: Mutagens Radiation: X-rays, UV Rays Chemicals: Asbestos, Formaldehyde

  6. Types Duplication: DNA segment REPEATED Deletion: DNA segment lost Inversion: DNA order reversed

  7. Disorders Down Syndrome: Trisomy 21. Characteristics: short height, round face, enlarged or creased tongue. https://www.youtube.com/watch?v=GieZ 3pk9YVo

  8. Chromosome Arrangement Photo of chromosomes

  9. Removal of amniotic fluid to see the karyotype of the fetus. https://www.youtube.com/watch?v=aAX ABDawDiw

  10. Crossing of animals or plants to achieve desired effects. https://www.youtube.com/watch?v=rW5 4_vM9SF0

  11. Produces recombinant DNA (desired outcome / characteristics) https://www.youtube.com/watch?v=dKBf xoPnT7g

  12. Genetic copy https://www.youtube.com/watch?v=tELZ EPcgKkE

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