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3.3: BOTH SEXUAL AND ASEXUAL REPRODUCTION INVOLVE CELL DIVISION

3.3: BOTH SEXUAL AND ASEXUAL REPRODUCTION INVOLVE CELL DIVISION. ASEXUAL REPRODUCTION (1). Cell Division used by most unicellular, and a few multicellular organisms, to reproduce 1 organism involved Offspring = genes identical to the parent (2). Split into Two

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3.3: BOTH SEXUAL AND ASEXUAL REPRODUCTION INVOLVE CELL DIVISION

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  1. 3.3: BOTH SEXUAL AND ASEXUAL REPRODUCTION INVOLVE CELL DIVISION

  2. ASEXUAL REPRODUCTION (1) • Cell Division used by most unicellular, and a few multicellular organisms, to reproduce • 1 organism involved • Offspring = genes identical to the parent (2)

  3. Split into Two Cell division and reproduction are the same thing in all single-celled organisms. (3) Occurs in Prokaryotes (4) Prokaryotes NO NUCLEUS = NO MITOSIS (5) Daughter cells = genes identical to parent cell Asexual in unicellular organisms BINARY FISSION

  4. Examples are algae, some yeasts, and protozoans, such as paramecium. (6) Mitosis or Binary Fission? NUCLEUS = MITOSIS SINGLE-CELLED EUKARYOTES

  5. BUDDING • Both unicellular and multicellular organisms bud (7) • More common among multicellular organisms (9) • Process in which a bud grows and breaks off of a parent organism (7) • When a bud reaches a certain size, it will Break free (8) • New organism = genes identical to the parent (Asexual Reproduction)

  6. Hydra Kalanchoe Plant BUDDING ORGANISMS (10)

  7. ANIMATION OF HYDRA BUDDING • http://www.sampsoncc.edu/staff/nawadallah/biology/meiosis/Hydra%20Budding-B.mov

  8. Occurs in certain multicellular organisms Two Functions: (11) A. Regrowth of damaged or missing body parts B. Asexual Reproduction If a starfish is cut in half, each half will grow back (12) Produces Two Genetically identical Starfish REGENERATION

  9. REGENERATION IN PLANTS • The growth of plants from cuttings made near the stem of the original will grow into a new plant . (13) • New Plant = Identical Genes of the Original (Asexual)

  10. Newt Limb Regeneration • http://www.luc.edu/faculty/wwasser/dev/regen2.htm

  11. How do you get sick so fast? Ex) Bacteria that causes strep throat Reproduces through binary fission (14) Generation time is short = 30 min. or less (14) Rapid Reproduction Rate (14) ASEXUAL REPRODUCTION AND HEALTH

  12. COMPARING ASEXUAL WITH SEXUAL REPRODUCTION (15)

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