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Sexual  Reproduction
 

Sexual Reproduction

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    Sexual  Reproduction Sexual Reproduction Presentation Transcript

    • Sexual Reproduction By- Justin Ehrenpreis
    • Production of sex cells is……
      • Gametes
    • Sex cell fuse by…………
      • Fertilization
    • Produces an egg cell…….
      • Zygote
    • What involves 2 parents?
      • Sexual Reproduction
    • Both parents contribute…………
      • A Gamete
    • Gametes contain……………….
      • Genetic information giving by……
      • Offspring obtained……
      • equally
    • Gametes are formed in ……..
      • Reproductive structures called….
      • gonads
    • Gametes are…………….
      • Sex cells
    • Males cells called…………..
      • Sperm
    • Females cells called…………..
      • Ovum or…….
      • egg
    • Gametogenesis is
      • A process that gametes are produced by…..
      • Meiosis
      • That happens in the……….
      • Gonades
    • Meiosis is……………..
      • Reduction division that create gametes
    • Fertilization is………..
      • Fusion of one sperm nuclei with one ova (egg) nuclei, producing a …………………
      • Zygote
    • Haploid or Monoplaoid represents…………….
      • A gamete which has half of the # of chromosomes necessary.
    • Once 2 gametes fuse together they………
      • Form a zygote that is a……
      • Diploid
    • Diploid has…………..
      • 2 joined chromosomes which is……….
      • A set
    • Meiosis occurs in………
      • Diploid cells
    • Meiosis chromosomes duplicate………
      • Once through 2 successive divisions, 4 haploid cells, with half the chromosome # of …….
      • Parental cell
    • Meiosis occurs only in…..
      • Sexual reproducing organisms
    • Depending on organism it may produce……………….
      • Haploid gametes, that………………
      • Do not…….
      • Divide further but……
      • Fuse to produce a…….
      • Diploid zygote
      • May produce…..
      • Haploid spores.
    • Haploid spores …….
      • Divide by…..
      • Mitotic cell cycles and produce……
      • Unicellular or multi cellular organisms.
    • Animas products of meiosis is the………………………
      • Gametes.
    • Meiosis consist of……………
      • 2 nuclear divisions
      • Meiosis1 and 2
    • Crossing-over is……….
      • A process that can give rise to genetic recombination.
    • Nucleolus disappears during…………….
      • Prophase 1
    • The key difference between mitosis and meiosis is……..
      • That sister chromatids remain joined after Metaphase in Meiosis 1, whereas in mitosis they separate.
    • Centrioles are in…………
      • Opposite poles.
    • Cytokinessis is
      • Separation.
    • Meiosis has…….
      • 4 cells
    • Mitosis has………
      • 2 cells
    • Chromosome do not……….
      • Replicate again in Meiosis 2 Prophase 2
    • Meiosis 2 Telophase 2
      • The making of 4 daughter cells