Genetics Unit - The importance of Cell Division 1 2 3 4 7 8...

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Genetics Unit Exam Notes The importance of Cell Division 1. Reproduction:     - Unicellular organisms use  2. Growth:      - Multi-cellular organisms need to develop tissue 3. 4. 5. Repair:      - Multi-cellular organisms need to replace  old/damaged cells  6. Genetic Continuity:      - Cell division allows DNA to be passes from one  generation to the othe 7. Gregor Mendel 8. Austrian Monk (1822-1884) 9. “Father of Genetics” - Garden Pea Plant was his specimen of choice. This was because: o Fast reproduction  o Easily controlled fertilization  o The variations on the traits were easily observable and alternated  10. 11. He was interested in the HEREDITY which is how genetic traits are passed on from parent to offspring from  gene to gene.  12. 13. Terms 14. 15. Selective Breeding     :    involves choosing individuals with desirable traits and mating them to enhance these  traits in the offspring.  16. Inbreeding     :    Occurs when mostly related individuals (similar genetics) are mated to produce offspring who  will preserve these traits.  17. overtime   pure breed 18. Hybrid offspring     :    with distinctly different parents  19. 20. DNA Review 21. 22. DNA     :    deoxyribonucleic acid  23. - 2 meters of DNA per cell 24. - DNA is a 3D double helix   25. 26. Histones     :    are proteins that help DNA wind and  organise  27.
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