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Unit 3 Notes: Reproduction & Meiosis

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Presentation on theme: "Unit 3 Notes: Reproduction & Meiosis"— Presentation transcript:

1 Unit 3 Notes: Reproduction & Meiosis

2 (1) Types of Reproduction
Asexual Sexual Growth & Reproduction Reproduction One Parent Two Parents Rapid Reproduction Rate Slower Reproduction Rate Offspring identical copy of Parent Offspring a mixture of genes from Parents

3 (2) Binary Fission: Type of Asexual Reproduction.
Unicellular Organisms: Parent splits in 2  Daughter cells identical Purpose: Growth & Reproduction

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5 (3) Antibiotic Resistance:
Bacterial DNA: DNA = regular cell instructions Plasmid = extra circular DNA Bacterial Conjugation: Exchange of DNA + Plasmid between 2 bacterial cells Allows cells to pass on resistance Antibiotics: Kill all bacteria not resistant Any which are survive Make copies of selves (Binary Fission) Exchange benefits (Conjugation)

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7 (4) Budding: Type of Asexual Repro.
Organism develops tiny buds on body/cell Bud = Offspring / Daughter cell Bud detaches  Grows into adult

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9 (5) Multicellular Life Cycle:
1. Meiosis  Make Sex Cells 2. Fertilization  Sperm + Egg 3. Zygote  Fertilized Egg (Developing Organism) 4. Mitosis  Grow, Develop & Repair new organism!

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11 (6) Meiosis Summary: Meiosis is used to make more sex cells (called Gametes or Sperm/Egg Cells). Meiosis happens in stages like mitosis. Meiosis divides twice: Meiosis 1  Start with 1 cell, end with 2 cells Start 2n, end 2n (or Diploid  Diploid) Meiosis 2  Start with 2 cells, end with 4 completely unique cells Start 2n, end 1n (or Diploid  Haploid)


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